Researchers has uncovered never before seen details in a set of prehistoric stone objects that feature a variety of artworks.

Basically, leather imprints are made by tapping the stamp heads with a hammer or mallet to force the stamp bases to make an engraved pattern on your leather material. Having understood the idea ...

They are engraved on the bottom, which gives the patterns their frosty white etched appearance. Mounted with the etched side downward onto the black hexagons, the contrast really makes the design pop.