Technically speaking, a snow sculpture refers to a sculpture form that is comparable to sand sculptures or ice sculptures in that most of it is now practiced outdoors, and often in full view of spectators, thus giving it kinship to performance art in the eyes of some. The materials and tools used include hand tools such as shovels, hatchets, and saws. Many are usually carved out of a single block of snow about 6 to 15 feet on each side and weighing about 20 – 30 tons. Continue reading for more.

[Source]