It was later excavated by Bruce Howe and Herbert E. Wright in 1951. Stone tools were found amongst a particular layer of Pleistocene gravels that dated to the late Acheulean period. The tools included pebble tools, bifaces and lithic flakes that were suggested to be amongst the oldest evidence of human occupation in Iraq.[1] They were found comparable with tools known to have been made around eighty thousand years ago.[2]