Again we cross a white, battered gully, the pathway of rock avalanches or snow avalanches.

我们再次穿过一个白色的、破旧的沟壑，这是岩石崩塌或雪崩的路径。

Few Yosemite visitors ever see snow avalanches and fewer still know the exhilaration of riding on them.

很少有优胜美地的游客见过雪崩，也很少有人知道在雪崩上骑行的乐趣。