Overview The Crystal Lake Group Campground is located in the beautiful Big Snowies south of Lewistown, Montana, at 5,700 feet. Home to the Crystal Lake recreation area, visitors enjoy hiking and fishing in the Snowies. Recreation The lake provides opportunities for swimming, fishing and canoeing. The various trails that stem from the Crystal Lake complex provide excellent views and interesting photo opportunities. One trail displays old hieroglyphs in a cave allowing visitors a glimpse of the pa