The Creationists have morphed into Intelligent Design advocates. The idea is that there is too much theological, geological, zoological and palentological data to be reconciled by a six day creation story and a traceable genealogy of only six thousand years. The answer is that the universe is way too complicated for anything but an intelligent Supreme Being to have created. The unexplained evidence is simply a demonstration of the complexity which couldn't have been by accident or evolution.
OK, almost any scientist is going to at some point run into the conundrum of "uncaused first cause." Track back to the Big Bang and you've got a point where there is no before this. There's where you get into Supreme Being territory without question.
Man Not Neanderthal Leaves 40,000 Year Art
I suppose that the Intelligent Design answer for this evidence of humans being around for more than 6000 years is a sort of divine Easter egg. An embedded little surprise for us to puzzle over.
This one is a few thousand years younger than the hand prints, but still more than 30,000 years old.
I had the incredible good fortune to see this in person in 1976. Then the caves at Altamira were still open to tourists and the pre-historic paintings were there for people to view. Today they are closed to preserve them. The exhalations of people passing through to view them were causing massive deterioration. It would be a shame to see these lost forever.