落らく石せき

noun, noun or participle which takes 'suru', intransitive verb

falling rocks; rockfall

Refers to rocks falling from cliffs or slopes, often as a natural hazard. Can be used as a noun or with する to describe the event.

• 昨さく夜やの大おお雨あめで落らく石せきがあった。

  There was a rockfall last night due to the heavy rain.

• この先さき、落らく石せき注ちゅう意いの標ひょう識しきが立たっている。

  Ahead, there is a sign warning of falling rocks.