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Dhani Irwanto
Dhani Irwanto Mohon Tunggu... Penulis Buku

Dhani Irwanto adalah seorang insinyur teknik sipil hidro dan lebih dikenal sebagai perencana dan ahli dalam hidrologi, bangunan air, bendungan dan tenaga air, profesi yang melibatkan antar-disiplin yang telah dijalani selama lebih dari tiga dekade. Terlepas dari kehidupan profesionalnya, ia juga seorang peneliti sejarah bangsa-bangsa dan peradaban, didorong oleh lingkungan, kehidupan sosial, budaya dan tradisi di wilayah tempat ia dibesarkan. Kehadirannya yang kuat di internet telah membuatnya terkenal karena gagasannya tentang pra-sejarah dan peradaban kuno. Dhani Irwanto adalah penulis buku "Atlantis: The Lost City is in Java Sea" (2015), "Atlantis: Kota yang Hilang Ada di Laut Jawa" (2016), "Sundaland: Tracing the Cradle of Civilizations" (2019), "Land of Punt: In Search of the Divine Land of the Egyptians" (2019) dan "Taprobana: Classical Knowledge of an Island in the Opposite-Earth (2019)". Dhani Irwanto lahir di Yogyakarta, Indonesia pada tahun 1962. Saat ini ia adalah pemilik dan direktur sebuah perusahaan konsultan yang berlokasi di Bogor, Jawa Barat, Indonesia.



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Atlantis: The lost city is in Java Sea

3 Mei 2015   09:58 Diperbarui: 17 Juni 2015   07:26 418 0 0 Mohon Tunggu...
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Atlantis: The lost city is in Java Sea

The Atlantis Story

The story of Atlantis comes to us from Timaeus and Critias, Socratic dialogues, written in about 360 BC by Plato. There are four people at this meeting who had met the previous day to hear Socrates describes the ideal state. Socrates wants Timaeus of Locri, Hermocrates, and Critias to tell him stories about Athens interacting with other states. The first is Critias, who talks about his great grandfather’s meeting with Solon, one of the seven sages, an Athenian poet and famous lawgiver. Solon had been to Egypt where priests had compared Egypt and Athens and talked about the gods and legends of both lands. One such Egyptian story is about Atlantis.

Atlantis, a likely legendary land nation mentioned in Plato’s dialogues Timaeus and Critias, has been an object of fascination among western philosophers and historians for nearly 2,400 years. Plato (ca 424 – ca 328 BC) describes it as a powerful and advanced kingdom that sank, in a night and a day, into the ocean around 9,600 BC.

Plato (through the character Critias in his dialogues) describes Atlantis as a land larger than Libya and Asia Minor put together, located just beyond the Pillars of Heracles. Its culture was advanced and it had a constitution suspiciously similar to the one outlined in Plato’s Republic. It was protected by the god Poseidon, who made his son Atlas king and namesake of the land Atlantis. As the Atlanteans grew powerful, their ethics declined. Their armies eventually conquered Africa as far as Egypt and Europe as far as Tyrrhenia (modern Lebanon) before being driven back by an Athenian-led alliance. Later, by way of divine punishment, the island was beset by an earthquake and a flood, and sank into a muddy sea.

According to Critias, Solon, while wrote his poem, enquired into the meaning and knowledge of the names and had translated them into their own language; when copying them out again translated them into Greek. Thus, the names include Poseidon, Heracles, Atlas, Athens, Egypt, Libya, Tyrrhenia and Europe are translated names which the originals were kept by Critias.

Plato’s seminal work, The Republic, outlines the ideology of Plato’s perfect state, one in which the rulers are philosophers. It was written down in the early years of the academy which Plato had founded in ca 386 BC. This institution was his answer to his disgust with contemporary politics and was, in essence, to train the philosopher-rulers of a future Athenian state. The Critias dialogue is in direct response to Socrates demand to know how his ideal state will conduct itself in action. What Socrates means by this ideal state is of course the Plato’s “republic”. In essence, this story is to be an illustration of how the ideal state conducts itself in warfare against its neighbors. In considering the Timaeus and the Critias, which includes the story of Atlantis, it has to be read against the background of The Republic.

The story of Atlantis as told by the Egyptian priest is probably ever really existed but Plato had been distorting the facts in order to support his ideology of an ideal state as in The Republic, or he added some embellishments of his own or aspects drawn from other legends. He embodied Athens as part of the story to show the the greatest and noblest action of Ancient Athens, which was probably another state in the myth told by the Egyptian priest, created from records in their sacred registers preserved in their temples. The Egyptians were said to have preserved the most ancient records and traditions.

The pre-history of Egypt  is known to the Neolithic period, beginning ca 6,000 BC or ca 8,000 BP. Yet, 9,000 years before Solon or 11,600 BP is beyond the historical span of Egypt. We could speculate that the ancient Egypt told by the priest is actually a primordial ethnic group and believed to be their ancestors prior the deluges and other catastrophes. The Egyptians were among the refugees and survivors of the catastrophes; then resettled on the land which is now called the Egypt. In the rescue, they brought records and registers, and hereinafter preserved them in their temples. Linguistic and alphabet studies of the Rejang culture in southwestern Sumatera conducted by among others Sir Thomas Stamford Raffles (1817), J Park Harrison (1896), EEEG Schroder (1927) and MA Jaspen (1983) show some correlations to the ancient Phoenician and Egyptian. Indonesian has ancient knowledge of pyramid building just like the ancient Egyptian; the Gunung Padang pyramid in West Java, Indonesia dated 23,000 BC or earlier is claimed to be the earlier that those in the Egypt.

The existence of Atlantis is supported by the fact that it is described in great details, mainly in Critias. In additions, various conditions, events and goods like the two-season climate, flood (tsunami), orichalcum, geographical features, buffalo and produces unknown to Plato are also described in detailed and lengthy words. The recent knowledge of late glacial and postglacial sea level rise and land subsidence that occurred almost precisely at the time described by Plato also becomes strong evidence to the truth of the story.

Atlantis in Java Sea

The Sundaland or specifically Indonesia has been advocated as a site for Atlantis. Key to this argument is that the Ocean of Atlantis refers to the ocean which encircles Eurasia and Africa, which was the historical understanding until the time of Christopher Columbus. Proponents of this idea claim that natives of Sundaland who fled the rising waters or volcanic explosions eventually had contact with Ancient Egyptians, who later passed the story onto Plato who gets some but not all of the details correct, including location and time period.

The first suggested linkage between Atlantis and Indonesia came from the leading Theosophist, CW Leadbeater (1854 – 1934 AD), in a booklet, The Occult History of Java, published in 1951. An American polymath William Lauritzen and about the same time Arysio Nunes dos Santos (1937 – 2005 AD) also made the Sundaland internationally known hypothesis. Zia Abbas, a computer scientist, claims to prove that Plato’s Atlantis is to be found in the South China Sea. Other high-profile representative of this Atlantis-localization is Sunil Prasannan, a molecular biologist who has worked among others at Imperial College London.

The atlantology of Sundaland hypothesis is also flanked by the studies of the geologist and geophysicist Robert M Schoch from the College of General Studies at Boston University, together with Robert Aquinas McNally, in 2003 published a book in which to express the two authors have reasons to suspect the concept of pyramid construction had been developed by a lost civilization, which formerly existed in Sundaland. In 2013, joined also the Indonesian geologist Danny Hilman Natawidjaja after its discovery that the Mount Padang in the province of Cianjur, West Java, was apparently brought by people in pyramid form about 13,000 years ago, the adoption of Atlantis was in the greater of the present-day Indonesia located.

Plato describes that “… nine thousand was the sum of years which had elapsed since the war which was said to have taken place between those who dwelt outside the Pillars of Heracles and all who dwelt within them …” and “… the island was larger than Libya and Asia [Minor] put together, and was the way to other islands, and from these you might pass to the whole of the opposite continent which encompasses the true ocean …”.

9,000 years before Solon’s day (ca 600 BC) means approximately 11,600 years BP. The sea level at this time was around 60 meters below the present-day sea level. The map showing the lands at 11,600 BP is extracted by the author from the GTOPO30 elevation grids published by USGS.


Traveling further from Sundaland, one may reach some islands like Nusatenggara Islands, Sulawesi, Maluku Islands, Mindanau and Luzon. Passing through these islands, one may reach the opposite continent, ie the large “Sahul Continent” combining the Australian Continent, Papua and the land connecting them. This continent encompassed Pacific and Indian Oceans. So that Plato’s statement: “… was the way to other islands, and from these you might pass to the whole of the opposite continent which encompasses the true ocean …” is true to point that Atlantis is hypothesized located in Sundaland.

Looking at the map, we will see that Sundaland is larger than Libya and Asia Minor, precisely what Plato affirms in his discourse on Atlantis.

The Atlantis Plain

Plato describes the plain as a level plain, surrounded by mountains which descended towards the sea, smooth and even, rectangular and oblong shaped, three thousand stadia (about 555 kilometers) long, two thousand stadia (about 370 kilometers) wide, looked towards the south, sheltered from the north, surrounded by mountains celebrated for their number, size and beauty; and had wealthy villages of country folk, rivers, lakes, and meadows. These descriptions are exactly fit with the geographical conditions configured on map generated by the author as shown on the following figure.


A level plain, smooth and even, descended towards the sea – The slope of the ground surface is mostly less than 1% declining southward towards the Java Sea and no visible mound on the whole plain. One may consider this as a very flat plain. The present-day conditions of the plain above the sea water level consist of swampy areas, tidal swamp irrigation practices, housing over water, water transportation, mangroves and peat land.

Surrounded by mountains celebrated for their number, size and beauty – There are two mountainous areas around the northern part of the plain, Muller-Schwaner and Meratus Mountains. The highest peak on the Muller-Schwaner Mountain  nearest to the plain is the Liangapran Hill with a height of 2,240 meters above the present day sea water level, while the one on the Meratus Mountain is the Mount Besar with a height of 1,890 meters. These mountains are mostly covered by primary forest, inhabited by enormous kinds of animals and as the inhabitations of the native Dayak tribes.

Looked towards the south and sheltered from the north – These are true that the plain is open on the south and sheltered by mountains on the north.

Rectangular and oblong shaped, about 555 kilometers long and 370 kilometers wide – The shape of the plain is rectangular on the southern part and oblong (elliptical arc) on the northern part. The size is almost exactly 555 kilometers long and 370 kilometers wide. Of course, the nature never gives an exactly regular shape to the geography of the land so that Plato’s descriptions are approximate to show the conditions in general.

Wealthy villages of country folk, rivers, lakes, and meadows – The area of the plain in present-day conditions is located in a tropical rain forest region, has high precipitation rate over the year, has warm temperature over the year, mostly swampy and has many large rivers and tributaries so that the region is fertile and rich of food and daily necessity resources.


The Atlantis Channel System

Concerning the water conveyor system on the plain, Plato describes that there were four kinds of channels: the circular (perimeter) ditch, the inland channels, the transverse passages and the irrigation streams. The perimeter ditch was artificial, 100 feet (about 30 meters) deep, 1 stadium (about 185 meters) wide, 10,000 stadia (about 1,850 kilometers) long, carried round the whole plain, received streams from the mountains, winding around the plain, meeting at the city and let off into the sea. The inland canals were straight, 100 feet (about 30 meters) wide, 100 stadia (about 18.5 kilometers) intervals, let off into the perimeter ditch and as means for transporting wood and products in ships. The transverse passages were cut from one inland canal into another. The irrigation streams tapping from the canals were meant to irrigate the land in the summer (dry season) while in the winter (rainy season) had the benefit of the rains. These descriptions are exactly fit with the present-day water conveyor system conditions on the plain.


The perimeter ditch was artificial, about 30 meters deep and 185 meters wide – One of the river hypothesized as the perimeter ditch is the Barito River and probably the Negara River situated on the eastern side of the plain. Since this “ditch” had the nearest distance to the capital, the Egyptian was apparently passing it and reported. Barito River is the largest and the longest river in southern Kalimantan, which are about 1,000 kilometers long, 600 – 800 meters wide and an average of 8 meters deep. Floodings and sedimentations of the river on a very flat plain over the past 11,600 years have changed the regimes of the river but calculating the conveying capacity (area × velocity and assuming the same flow velocity because of the same gravitational energy slope), the cross section area of the flow (width × depth) as described by Plato is about 185 × 30 = 5,550 square meters while the area today is amazingly almost precise, 700 (average) × 8 = 5,600 square meters.

The perimeter ditch was about 1,850 kilometers long, winding around the plain, meeting at the city and let off into the sea – Measuring the length on the map but considering the windingness factor from the topography, the resulted length is almost precisely the same as in Plato’s Critias, ie 1,850 kilometers. While measuring the square and oblong shape of the plain, which is 555 kilometers long and 370 kilometers wide, a perimeter length of 1,656 kilometers is obtained, also logically correct if the windingness factor is not considered. So, it is obvious that Plato is true.

The perimeter ditch received streams from the mountains – This is true as the present-day rivers on the plain are originated from the Muller-Schwaner and Meratus Mountains.

The inland canals were straight, about 30 meters wide, 18.5 kilometers intervals and let off into the perimeter ditch – The present-day rivers represent the inland canals are the Kapuas, Murung, Kahayan, Upper Barito, Mangkatip and probably Sebangau Rivers. The regimes of these rivers should have been changed over the past 11,600 years due to any processes of flooding, sedimentation, river bed movement and meandering on a very flat plain. Interchanges of flows and orders among the rivers might also occur. However, in general view the straightness and elongation of the rivers are preserved until today being parallel to each other and in the north-south direction, and in similar case as the Barito River, the widths have been widened. The average distance of these rivers is approximately 20 kilometers, also considered in close agreement to the Plato’s figure of 18.5 kilometers.

The inland canals were means for transporting wood and products in ships – This custom is alive until today. Rivers are an integral part of everyday life of people in this region. Most of the rivers in southern Kalimantan are navigable. The traditional ship or vessel is locally known as “jukung” having many types or forms. These rivers and all their tributaries are a network of transportation system and become very important means for the people as every district is accessible by rivers. Since ancient times, the river network supports economic and social activities of the population of southern Kalimantan. Moreover, the river network has been the economic lifeblood of population because most of their economic activities are carried out through and in the rivers. Communications among regions in the hinterlands, the towns and ports in particular are also done via the river. The rivers become mainstays for the smooth distribution of goods and people from upstream to downstream and vice versa. Various types of forest, mining and agricultural products abundant in rural areas such as wood, rubber, gutta-percha, rattan, resin, “jelutung” (gum sap), wax, coal, gold, pepper, bird’s nest, woven material, dried or salted fish, deer jerky, fruits and many others are transported to collection points or ports through the river network. Instead, a variety of daily necessities such as rice, sugar, salt, flour, corn, palm oil, tobacco, gambier, pottery, household appliances, copper wire, fabric (linen) and so on are also transported from the ports to various areas in the hinterlands through the river network.

The transverse passages were cut from one inland canal into another – This is exactly precise. Looking at the maps we can see numerous transverse passages exist in the region, some of them were built or rehabilited in recent times. The passage is known locally as “anjir”, a canal linking two rivers as part of the transportation network. The canals are also used as primary tidal swamp irrigation canals supplying water to and draining from the cultivated lands.

The irrigation streams tapping from the canals supplied water to the land in dry season but rainfall in the rainy season yielding two crops in a year – This is also exactly precise. Today’s practices of tidal swamp irrigation system in southern Kalimantan is traditionally known as “anjir system” where primary canals called “anjir” or “antasan” were constructed connecting two tidal rivers, also used as navigation purpose. Inland canals were built to irrigate and drain the fields from and to the anjir: secondary canals called “handil” or “tatah” and tertiary canals called “saka”. During low tides, the canals drain the toxic water while during high tides fresh water enters the canals and conveyed to the fields. The system yields two rice crops in a year. This system is also used to cultivate other crops or fish. Southern Kalimantan is today an exporter of rice to other regions.


The author concludes that the canal system described by Plato turns out precisely the present-day river transportation network and the “anjir” irrigation system in southern Kalimantan region.

The Island and the City of Atlantis

According to Plato, the Atlantis Island where there was a harbor with a narrow entrance was in a sea surrounded by a boundless continent. The hypothesized boundless continent is the main land of Sundaland attached to the Asian Continent, and the only sea surrounded by it was in those days the ancient Java Sea. Therefore, the author hypothesizes that the Atlantis Island is located in Java Sea.

The Atlantis Island, where there was a central hill, was an island located near the main land identified from the elevation grids, where the sea water level was around 60 meter below the present-day sea water level, as shown on the figure below. As seen on the map, the island was situated in front of a strait separating the island and the main land. There was a relatively flat plain on the north; part of it is now the southern part of Kalimantan Island. The “real sea” surrounding the island is the ancient Java Sea which is a gulf with the entrance forms a strait.


Crantor’s commentary as reported by Proclus stated that “… according to them, there were seven islands in that sea in their time ...” and “... the extent of which was a thousand stadia [185 km]; ...” is about right in describing the geography of the region in the Java Sea in those days. He describes that there were seven small islands and other three large islands, so in total there were ten islands in any sizes. Although the number as seen on the map is not exactly the same due to the unknown process of sedimentation, scouring, littoral drift, limestone solution and tectonic movement over the past 11,600 years, the elevation grids have low accuracy and the author discards the small islands, the regional geography is generally true. The statement that “the extent of which was a thousand stadia (about 185 km)” is in general also about true. One of the large islands is identified as Bawean Island.

The author hypothesizes the location of Atlantis Island and reconstructs the city based on Plato’s descriptions, as shown on the following figure. The site is identified by the sailors as Gosong Gia or Annie Florence Reef, a coral reef described as small in extent and dries at low water.


The Plato’s description that “they had fountains, one of cold and another of hot water, in gracious plenty flowing; and they were wonderfully adapted for use by reason of the pleasantness and excellence of their waters is noticeable. Bawean Island off in the Java Sea is a prototype of the Atlantis Island as it has the same environment, geological formation and tectonic processes, as well as situated close to Atlantis Island. There are several hot and cold springs in the island resulted from the tectonic activities in the region.


The description that “the stone which was used in the work they quarried from underneath the center island, and from underneath the zones, on the outer as well as the inner side, one kind was white, another black, and a third red, and as they quarried, they at the same time hollowed out double docks, having roofs formed out of the native rock” is also noticeable. The white, black and red colored stones mentioned by Plato are apparently similar to the igneous rock that is deposited in Bawean Island with white (acidic), black-grey (alkaline) and red (ferro-oxide) colors, known among others as Leucite, Phonolite, Trachyte and Onix. The igneous rock just like in the Bawean Island is hard and strong so that it has enough natural strength to stand as roofs of the hollowed out double docks.

The Java Sea depth at the time of Atlantis (11,600 BP) was around 20 – 30 meters so that it was sufficient to enable the navigation of large ships.

God Poseidon

God Poseidon worshiped by the people of Atlantis is identical to the god Baruna, both were given the nickname the "Water God" or the "Sea God". So, Solon translated Baruna into Poseidon. Kalimantan Island was formerly known as Warunapura or the place of the god Baruna. The island is known by the Westerners as Borneo, derived from the name of Baruna.

Pillars of Heracles

Within the dialogues, Plato does not mention the Pillars of Hercules as the hills around the Strait of Gibraltar; the latter is known later. In addition, the Egyptian priest called them "like the Pillars of Heracles", so they were not necessarily the pillars known by the Athenians. Plato does not call them "pillars" but are "monument" located in the border.

Heracles is identical to Kala because both have similar appetites. Apparently, Solon translated "Kala" to "Heracles". The author hypothesizes the Pillars of Heracles as boundary monuments, locally known as “tugu” decorated with the faces of Kala, ubiquitous in Java and Bali.


Orichalcum is composed from the Greek syllables oros (ρος, mountain) and chalkos (χαλκός, ore), simply means “mountain ore”. We could speculate that the Plato’s orichalcum is actually the zircon as this mineral can be “dug out of the earth in many parts of the island” or abundant in southern Kalimantan where the Atlantis plain is hypothesized. This material is really valuable second to gold; it has gemstone quality and is popular as diamond simulant. Zircon ore requires to be processed through extraction, refinement and heating to bring out different colors of zircon products.

Plato mentions that the ring of wall of the Temple to Poseidon and Cleito was covered and flashed with the “red light” of orichalcum. No known metal or its alloy has a red color so that orichalcum is not a metal but is possibly the hyacinth (the red zircon). When finished, its nature is sparkling like diamond that metals do not posses, which why Plato describes it with the words “flashed” and “light”, in particular.

In “being more precious in those days than anything except gold”, Plato compares orichalcum with gold; while “zircon” derives from the Persian zargun, meaning “golden-colored”, corrupted into “jargoon”, a term applied to light-colored zircons which the German adapt to Zirkon. Allegedly, Plato or Solon mistranslated zargun, the golden-colored material into orichalcum as there was no such word in Ancient Greek.

Buffalo Sacrifices

At the end of the Critias, it is described that in every five or six years alternately, the kings of Atlantis gathered to discuss and make arrangements, topped off with plenty of water buffalo sacrifice. The tradition of buffalo sacrifices as offerings to the god exist only in Southeast Asia and southern part of Central Asia. Of course, Plato did not refer to it as "buffalo" because this animal is only found in the area, but as a beast resembling that of "bull".

Temples and Pyramids

As well as menhirs, stone tables, and stone statues, Austronesian megalithic culture in Nusantara also featured earth-and-stone step pyramid structure, referred to as “punden berundak”, regarded as one of the characteristics of the original culture of the archipelago. These structures have been found and spread throughout Nusantara as far as Polynesia. Among them are found in Hyang-Argapura Mountains, Lebak Sibedug, Basemah, Pangguyangan, Cisolok and Mount Padang; the latter of which is the biggest and the oldest megalithic site in Southeast Asia dated ca 23,000 BC or older (Natawidjaja, 2013). The Sukuh and Cetho temples in Central Java (dates are debated) show the Austronesian indigenous elements of step pyramid that somewhat resemble Mesoamerican pyramids. The step pyramid is the basic design of the Borobudur temple in Central Java.

As said in Plato’s Critias, the temple to Poseidon and Cleito was built in the center island which was a hill, encircled by rings of waters. To reach the temple from the innermost ring of water, steps on the hill slope were definitely required. This could mean that the temple is featuring an earth-and-stone step pyramid structure, characterizes the original culture of Nusantara that is referred to as “punden berundak”.

Dhani Irwanto, 2 May 2015

Updated 4 May 2015, 5 May 2015