Hi Jack, where's Jill?
Study the three circled areas closely and scroll down to see close-ups.
#1 is a non-human skull. #2 is some artificial artifact. #3 turns out to be a three fingered hand in later photos. Geez Jack, how come you didn't tell us about these items?
Ok, bring in the jury. The skull and the hand disappear in later photos...............Hmmmmmmm.