Why would these “educational” drawings be in such inaccessible places if they were learning tools?
Not all of them are.
And some might have been part of “initiation into the mysteries” kinda thing.
Dark cave. Flickering torch light. Shrooms. Critters dancing on the walls. Shaman doing his shaman routine.
That kind of thing.
And the question right back at you. If it was art, why in such inaccessible places? for those paintings that are in inaccessible places.
And, if you’re a culture accustomed to going into and out of caves for various things and purposes, is their idea of inaccessible the same as our own?