Descend too soon, the snow surface will be icy & difficult for skis to grip.

Sunburn is often a health issue as the snow surface reflects almost all of the ultraviolet light falling on it.

It probably lies 17 m (56 feet) below the present snow surface.

Base: The bottom of the board that is in contact with the snow surface.

It is important that the base be "slippery", with respect to the snow surface and board interaction.

What is different about glacier skiing is the snow surface.

In less extreme cases, it may suffice to break the snow surface by throwing a snowball ahead.

The white snow surface turned dark gray, but the trail was plain.

Chemicals can be applied to the snow surface in order to harden the course.

Mount Moore rises 305 m above the snow surface.