noun, noun which may take the genitive case particle 'no'
among the mountains; mountainous area
Refers to a location or region situated deep in the mountains. Often used attributively with の to modify nouns like 部 (region) or 地帯 (zone).
その村は山間の静かな場所にある。
The village is in a quiet place among the mountains.
山間部では冬に雪が多く
In mountainous areas, it snows a lot in winter.