These rare creations are called snow rollers, and Mother Nature makes them all by herself. Snow rollers form when wet snow falls on ground that is icy, so snow won't stick to it.

这些稀有的造物叫雪卷，大自然全凭一己之力创造了它们，当湿雪落在多冰的地面并且不黏附于地面时，雪卷才有可能产生，强风吹动地面上的湿雪，滚动后便形成了雪卷。

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Following that, that icy cold rain falls.

接着又是一场冰凉的大雨。

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It follows two falls by experienced climbers on Lliwedd in Snowdonia in 24 hours in icy conditions.

BBC: North West Wales