Answer by Franklin Veaux:
Drawing maps on stone is both harder and less useful than it looks.
In pre-industrial societies, mapmaking is extraordinarily difficult. It’s really hard to measure large distances or map contours accurately.
And when you do have a map, you don’t want it on the inside of a cave; what good is that? You want to be able to bring it with you.
This is what an ancient map looks like:
These are maps. Specifically, they are maps for navigating waterways, made by the Inuit. They represent the contours of the land as seen from the water, and they help guide a person in a boat.
Ancient maps didn’t all look exactly like this, but they did exist, and they didn’t tend to resemble what we think of as “maps.” They were small, portable representations of land features, not top-down overviews of the terrain.