New book unravels secrets of ‘The Mysterious Stone’

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Robert Salgado de Carvalho interprets Inga Stone glyphs in context of native Brazilian cultures

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As an artist, author Roberto Salgado de Carvalho has a great interest in prehistoric art. In “The Mysterious Stone” (published by Xlibris), he shares his study of the Inga Stone, a set of glyphs carved in low reliefs found in northeastern Brazil.

Was it the work of aliens? Perhaps it was the Phoenicians? Could it be an encoded atomic energy formula made thousands of years ago? Many of the theories around it take its origins to far-away longitudes and even to outer space. Carvalho looks closer to home, to native Brazilian cultures. His book presents ethnological evidence about the true meaning of the engravings.

“Indigenous cultures are part of mankind's heritage,” says Carvalho. “The more data we get about different cultures the better we can understand how man managed to survive in different environments and situations.” As a way to better understand the depths of man’s sensibility and his soul.

“The Mysterious Stone”
By Roberto Salgado de Carvalho
Hardcover | 6 x 9in | 76 pages | ISBN 9781499076653
Softcover | 6 x 9in | 76 pages | ISBN 9781499076660
E-Book | 76 pages | ISBN 9781499076646
Available at Amazon and Barnes & Noble

About the Author
Roberto Salgado de Carvalho is a native of Brazil who currently resides in Washington DC. He received a degree in art education and is currently employed as an art teacher with the District of Columbia Public School System. Carvalho is also a painter, his works having been displayed in galleries around the world.

Xlibris Publishing, an Author Solutions, LLC imprint, is a self-publishing services provider created in 1997 by authors, for authors. By focusing on the needs of creative writers and artists and adopting the latest print-on-demand publishing technology and strategies, we provide expert publishing services with direct and personal access to quality publication in hardcover, trade paperback, custom leather-bound and full-color formats. To date, Xlibris has helped to publish more than 60,000 titles. For more information, visit or call 1-888-795-4274 to receive a free publishing guide. Follow us @XlibrisPub on Twitter for the latest news.

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