Snow Sledding

Sledding (US), sledging (UK), sleding or tobogganing is a common activity in wintry areas, similar to sliding, but in a prone or seated position requiring a device or vehicle generically known in the US as a sledor in other countries as a sledge or toboggan. More formally it is one of three olympic sports— the luge,skeleton, or bobsledding, all of which are based on sled principles and developed in the same time and place (St. Moritz) by much the same circle of people, mainly English tourists with an interested assist from the worthy craftsmen of that Swiss village.

Reference: Wikipedia Snow Sledding