article_snippet.sent: If this is true, prehistoric people would have had to manoeuvre chunks of volcanic rock onto terraces built on the mountainside and stack prehistoric people on top of each other to create a pyramid – a considerable feat of ancient engineering.
article_snippet.sent: President Yudhoyono believes such a pyramid would be proof of an advanced ancient civilisation in Java and said that the majority of the stepped site is man-made, perhaps built by generations over a matter of centuries.
article_snippet.sent: The geologist is now working to establish the authenticity of the stepped site.
article_snippet.sent: Dr Hilman said that the ruins hide walls and rooms with steps and terraces below, which are evidence of a complex building.
article_snippet.sent: The structure is covered with massive rectangular stones of volcanic origin.
article_snippet.sent: The structure has been subjected to multiple geoelectric surveys, where ground penetrating radar and samples have been used.
article_snippet.sent: this said that so far man-made structures have been detected 49 ft (15 metres) underground.
article_snippet.sent: Volcanologist Sutikno Bronto believes that the structure isn’t a pyramid at all, but the neck of an old volcano and that the stones surveyed have been weathered by nature instead of being cut by humans.
highlights_snippet.sent: Dr Danny Hilman says man-made hillside hides a pyramid structure .
  