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Inga Stone. Source: Marinelson Almeida Silva/CC BY 2.0

Message from Outer Space? The Mysterious Indecipherable Script of the Inga Stone

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Standing amidst the waters of the Inga River in Brazil, the mysterious Inga Stone of Paraíba, Brazil is an archaeological treasure of much ongoing controversy. Covering most of its 150-foot length (46 meters) and 13-foot (4 meters) height are strange, unidentified geometric symbols, varied in size and shape, which are apparently carved into its Gneiss exterior. Although many observers have speculated on the origins and meaning of the symbols, no theory has yet been proven 100% factual. Are they a message to future generations from our ancestors? Did a previously unknown civilization exist, possessing ancient technology long since forgotten? What do the symbols really mean, who carved them, and why?

Unveiling the Inga Stone's Legacy

Dating back in origin at least 6,000 years, the stone is a worldwide wonder. There are other stones, as well as caves, around the Inga stone which also have carvings on them, however they are not of the same intricate level of craftsmanship or style as the Inga. Archaeologist and researcher Gabriele Baraldi stumbled upon his first Inga cave in the year 1988 - after which several more were found. In total, Baraldi has examined up to 497 symbols across all the caves’ walls. Most of the Inga's carvings are obscure, but a few of them are undoubtedly representative of celestial features, with two being almost identical to the Milky Way and constellation of Orion.

Others are thought to be animals, fruits, weapons, human shapes, ancient (or imagined) aircraft or birds, or a crude “table of contents” of stories divided into sections with each symbol connected to the number of a chapter. Fr. Ignatius Rolim, Professor of Greek and Latin Theology, argued the symbols were similar to ancient Phoenician carvings, and was among the first to argue this theory.

Other researchers felt the symbols were related to ancient runes, and still more asserted their similarity in complexity and linear arrangement to a possible short piece of religious scripture. Another researcher, Austrian-born Ludwig Schwennhagen, studied Brazilian history in the early twentieth century and found strong connections in appearance from the Inga symbols to not only the Phoenicians but also the demotic writings (linked more closely to business or literary document-style writings) of the ancient Egyptians. Further groups found a remarkable similarity of the carvings of Inga to the aboriginal artwork found on Easter Island.

Inga Stone, Paraíba, Brazil. (Marinelson Almeida Silva/CC BY 2.0)

Inga Stone, Paraíba, Brazil. (Marinelson Almeida Silva/CC BY 2.0)

Inga Stone: Symbols Undeciphered

A closer evaluation of each symbol was the task of some ancient historians, such as author and researcher Roberto Salgado de Carvalho. The concentric circles carved may be related to phallic imprints, while the spiral shapes might signify "transcosmological shifts or travel", likely due to shamanic trances/altered states of consciousness or otherwise ingested hallucinogens, while the "U" shapes could mean a uterus/vagina, rebirth or an entrance/door, according to Salgado de Carvalho. The series of symbols in this respect could therefore signal an ancient formula carved onto the Inga, possibly used for accessing a "door to the supernatural world," Salgado de Carvalho suggests. Others have drawn connections to the laws of exogamy at the time. Potholes, also filled with the carvings, found near the Inga are thought to have a connection to early civilizations' belief that the first mythical people arose from such shapes in the ground. Some have speculated an even more complicated hypothesis that the symbols are actually drawn upside-down and coded purposely for additional secrecy. Others have pondered the possibility that the ancient carvings were a warning to future civilizations of an approaching (or possibly recently survived) worldwide disaster, through which the ancients had briefly retained technology from an earlier existence. In addition, the possible appearance of more than one language being carved on the stone brings another realm of possibility into question.

Central part (more detailed) of the Inga stone. (Helder da Rocha/CC BY-SA 2.0)

Central part (more detailed) of the Inga stone. (Helder da Rocha/CC BY-SA 2.0)

In 1976, Spanish engineer Francisco Pavía Alemany initiated a mathematical study of the Inga Stone archaeological monument. Published in 1986 by the Instituto of Arqueologia Brasileira, his findings revealed 'bowls' and a petroglyph forming a 'solar calendar,' with a gnomon casting shadows of the sunrise. Later, Alemany focused on documenting surface symbols, identifying star-like petroglyphs grouped in possible constellations. The coexistence of 'bowls' and 'constellations' grants Pedra do Inga its archaeoastronomical significance. Unfortunately, the site remains at risk due to potential damage by vandals.

Since there is no historical evidence to date which links the representation of stars and constellations to the native Brazilians of the time period, a nomadic civilization, or group otherwise temporarily visiting the region, quite likely comprised the artists. Some insist common lithic carving tools of the time period would have sufficed for ancient Indian cultures to create the piece with enough effort and skill.  Another theory, posited by Baraldi, holds that an ancient civilization used geothermal energy processes to create the symbols using molds and lava conduits of inactive volcanoes.

The Inga Stone Enigma: Carvings from Beyond

An additional popular theme of extraterrestrial contact has been considered, since the Inga's symbols were so different than others found at the time, with some researchers, such as Claudio Quintans of the Paraibano Center for Ufology, going so far as to indicate that a spaceship had landed in the Inga area during this ancient time and the symbols were probably drawn by the extraterrestrial guests themselves onto the rock. Still others, like Gilvan de Brito, author of "Journey to the Unknown," ("Viagem ao Desconhecido"), share the view that equates the symbols with ancient formulas or mathematical equations explaining quantum energy or the distance travelled between planets like the Earth and the moon.

Close-up of the Inga Stone. (Leonardo Chaves/CC BY-NC-SA 2.0)

Close-up of the Inga Stone. (Leonardo Chaves/CC BY-NC-SA 2.0)

Regardless of which theory you prefer, there is little disagreement about the significance of this finding. The carvings of the Inga Stone have had a meaning of some kind to someone which was very unique, and painstakingly expressed - but what was it and, most importantly, how is it relevant to us today? As we advance in our own civilizations' technology and awareness, we can remain hopeful for an increased understanding to shed some light onto this and other ancient mysteries.

Top image: Inga Stone. Source: Marinelson Almeida Silva/CC BY 2.0

By Kristen Callihan


Salgado de Carvalho, R. 2014 . The Mysterious Stone

The Mystery of the 6,000-year-old Inga Stone. Available at:

The Strange Inga Stone Inscriptions of Brazil. Available at:

Unsolved Enigma of the Inga Stone and its Mysterious Ancient Undeciphered Signs. Available at:

The Mystery of Inga's Stone. Available at:



Pete Wagner's picture

It’s a hoax.  Wikipedia says the stone is basalt, but it’s obviously not.  Looks like soft sandstone. And look at this, seems somebody took a grinding tool to it, fairly recently.

Nobody gets paid to tell the truth.

These petroglyphs stand out because of how smooth they were done. I've never seen anyone replicate the intricacy in these types of glyphs, it's got to be a suppressed method.

Most likely carvings from the people who built Tiahuanaco and Puima Punku -- people from Mu. So that would push it back in time to pre-10,000 BCE, when Tiawanaco and Puma Punku were inundated by a tsunami from the Caribbean. They were at sea level at that time. Some affinities with Easter Island / Indus Valley script. But, looks like doodling by Muvian youngsters when the rock was soft. The extraterrestrial idea seems unwarranted. Read James Churchward.
Dr. Saul Pressman

Tsurugi's picture

Why are you posting from two different accounts?

Native's picture

It is my opinion that modern humans have great difficulties with the interpretation bit because we don´t observe the celestial motion as much as our ancestors did.

It is fairly easy to carve lines in the bedrock and knock and grind round holes, all though it will take some time.

Some natural and logical interpretations could be:
Concentric Rings = The Celestial Pole area and orbiting stars.
Grouped Cup Marks = Specific Star Constellations.
Cupmark Holes in lines = The Milky Way Band or a part of it.
Spirals = Galactic Swirls

The many figures also could represent star constellations and even the contours of the Milky Way and the entire imagery is most likely a part of the local Story of Creation.

So, in this way the symbols really have a connection to “outer space”.

As a Comparative Mythologist and Natural Philosopher, I´ve been working with Mytho-Cosmology for some 35 years and you can study my work on my personal website here –

I´m looking forward to your response on the thoughts and contents.

Ivar Nielsen


Kristen C's picture

Kristen C

Kristen C is a freelance writer with degrees in Counseling and Integrated Humanities, which featured cognates of Psychology, Sociology and Religious Studies. Kristen enjoys nature, loves animals and is interested in vegetarian cooking, natural and homemade do-it-yourself projects and almost all types of... Read More

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