What is "rockslides"

Usage examples of "rockslides".

Old rockslides obscured the path here and there, dragging firs and cedars down towards the valley below, and in these places bushes and broadleafed trees had found a foothold, making passage difficult.

Countless rockslides had buried it every ten paces or so, forcing him to scramble across uncertain, shifting gravel, raising clouds of dust in his wake.

Further down I saw where rockslides had flaked away, taking the roadway with it.