Thank you Siberia. I'm talkin about a description of an erosion of the mountains by weathering. The sentence I'm talking is: "The brown at the bottom contains more iron oxide than the others. This means it erodes more quickly and forms those shear cliffs and hanging valleys you see."
I think Shear Cliffs should be "pareti di roccia" since "scogliera" is for italians just "sea cliff" and a hangin' valley is "sella"... But I'm not sure.