Researchers on Wednesday unearthed at Visoko, Bosnia some stone slabs, believed to be relics of an ancient pyramid lying beneath a huge hill. (file photo)

    BEIJING, April 20 (Xinhuanet)-- Researchers on Wednesday unearthed some stone slabs at Visoko, a central Bosnian town. They believe these geometrically cut artifacts might be the relics of an ancient pyramid lying beneath a huge hill. 

    If confirmed, the pyramid  would be the first ever found in Europe.

    Archaeologists and other experts began digging at Visoko last week to unearth a step pyramid covered beneath the 2,120-foot hill known as Visocica.

    "These are the first uncovered walls of the pyramid," Semir Osmanagic, a Bosnian archaeologist said of the stone slabs.

    "We can see the surface is perfectly flat. This is the crucial material proof that we are talking pyramids," he said.

    Osmanagic estimates that the structure may have been 722 feet high, possibly a third taller than Egypt's Great Pyramid of Giza.

    The huge stonework discovered Wednesday appeared to be cut in cubes and polished.

    "It is so obvious that the top of the blocks, the surface is man-made," Osmanagic said.

    Earlier research on the hill found that it has 45-degree slopes pointing toward the cardinal points and a flat top. Under layers of dirt, a paved entrance plateau, entrances to tunnels and large stone blocks were discoved.

    Satellite photographs and thermal imaging also revealed two other, smaller pyramid-shaped hills in the Visoko Valley.

   The three pyramid-shaped hills appear to be connected by an underground tunnel, which experts say was certainly man-made. Enditem

    (Agencies)