We tend to call the simple version of those "mounds". There's a lot of them in the world. Square pyramids are what you get when you make a mound out of rectang

We tend to call the simple version of those "mounds". There's a lot of them in the world. Square pyramids are what you get when you make a mound out of rectangular dressed stone. Making cones or other types of pyramids out of dressed stone is much harder because they demand more complicated shapes.