Here is another piece of unused design art for the cave sequence at the beginning of Inherit the Earth: Quest for the Orb. It's interesting to note the "gray alien" look to the scientists. Also, I have no idea what the turtle in the lower-left corner is doing. (I think that bit was an afterthought.)

Sorry for the scan quality and the tell-tale horizontal lines. The sketch was drawn on the back of a blank form!

Artist: Glenn Price