谷たに筋すじ

noun

valley channel; stream course; watercourse in a valley

Refers to the natural channel or course of a stream within a valley, often used in geographical or hiking contexts.

• 谷たに筋すじに沿そって歩あるくと、小ちいさな滝たきが見みえてきた。

  Walking along the valley channel, a small waterfall came into view.

• この谷たに筋すじは大おお雨あめのときに水みずかさが増ます。

  This stream course swells during heavy rain.