Valleys pl. : of Valley

Example:
What process turns anticline ridges into anticline Valleys?

Taxonomy
valleys, glacier, shoulders, river valleys, Scotland, characteristic, U-shaped valley, villages, ice, slope, the Alps, U-shaped valleys, erosion, broad shoulders, free encyclopedia, rivers, Rift valleys, glen.

Defination from the web:
valleys. Most valleys belong to one of these two main types or a mixture of them, at least with respect of the cross section of the slopes or hillsides. Contents ...