How to make a rock fall down a mountian

i wanted to make a mountain that the player has to climb up and dodge falling rocks but the problem is that the mountain is a spiral so the rocks just fall off the edge
how would i make something that spawns rocks that will fall down the mountain but not off of it

You’ll need to create a spawning system that supports:

  • Collision Groups (For example: invisible walls that only collide with the boulders which keep them from falling off the cliffside)

  • Custom Physical Properties (Density, Workspace Gravity, etc. to make sure the boulders don’t bounce, fall faster, and have a strong impact force.)

  • Constraints/Body Movers to keep them bound to a specific position or moving in a certain direction (optional)

i was thinking about using collision groups becosue i wanted the players to be able to fall off the mountain
i was also thinking of animating the rock