The same energy swept up the crater walls and caused the flat plane layers of rock behind me to actually be uplifted.
撞击的能量同时也形成了这坑壁造成了我周围升起的这些岩层。
Crash Course 天文篇
Some crater walls collapse a bit and have dark channels running down them, which look like they could've been carved by flowing water, but there are other possible sources too, so their cause still isn't certain.