Mountains or high places

I’m a person that likes to drive around the map and crash my cars within the map like drive it off a cliff. Now what I want are mountains that are big things of land you can drive off at a very high place, maybe make the mountain side rough for more damage. Now there are hills but to me they aren’t big enough.

Mountains are basically like the stunt park, another place to destroy your cars in an interesting way. Maybe add a big flat top to one of em to get some speed or do what you want.

You’d get up the mountain by a tunnel system that goes through the mountain with a bit a flat places so you don’t lose so much speed to where you can’t get up, where at least the school bus can get up.