Top of the mountain
Attainment of knowledge through experience (climbing the mountain).
Closer to heaven.
Advantage point, vision.1
The mountain survives the flood.
Inside the mountain
Treasure, dwarves2
Place of secrecy, secret facilities.
Batcave
Cavern
Swallowed by a mountain
Belly of the mountain
The pyramid 3
1
Building on top of the mountain is a common practice, for it gives a strategic advantage, you can see your enemy approaching from afar.
2
Treasure or gold inside the mountain is common in many stories.
The Hobbit, Tolkien
Sesame mountain, Grimm brothers
3
Climbing up the mountain is hard and concentrates the multiplicity at bottom to the peak, to a point. This is the same as focusing on heaven from earth
This is why the tip of the pyramid is covered in gold.