Theblockis prepared with pulverized fuel ash, naturalsilicasandandlimethroughsteamingand pressing with a pressurevessel. In particular, asimulatedstonelayer3 is added outside the block.
Simulated torchlight illuminates the facsimiles, giving visitors a sense of what it must have been like for the sophisticated Stone Age artists who created these treasures an estimated 20, 000 years ago.