ive met some of the people involved with the burrows cave find, and ive actually seen some of the artifacts, and i can tell you that in addition to the rock art, there were discovered skeletons in armor, lots of gold, and evidence ponts to the cave being a tomb for alexander helios and cleopatra selene. burrows seems to have sold a lot of the artifacts to private individuals, though i cannot verify that as a certainty. also, the us gov has swooped down and sealed off the area from former colonel burrows.