This is the 9066th most frequent Japanese word.
渓谷
A mountain valley or gorge.
Here, 渓谷 is used to describe the geographical feature known as a gorge.
渓谷の底を川が流れている。
A river flows at the bottom of the gorge.
In this sentence, 渓谷 refers to a specific scenic gorge that is ideal for seasonal visits.
この渓谷は紅葉の季節に訪れるのが最高です。
Visiting this gorge during the autumn foliage season is the best.
Here, 渓谷 denotes the location where outdoor recreational activities take place.