intermontane

adj

1. (not-comparable)Between mountains.

   “The distinct types of relief include regions of high mountains, low hills, dissected plateaus, intermontane valleys, and coastal swamps.”

   “Later, the discoveries of rich "pocket" deposits in the Red Butte district lifted the intermontane hill country temporarily to the high plane of a bonanza field.”

   “Sediment infilling, bathtub-like, of dammed intermontane basins formed flat high plains at each step.”