 The winter is possibly the busiest season; the area can be found packed with downhill skiers, cross-country skiers, ice-fishers, snow-shoers and–most of all-snowmobilers.The North American Snowmobile Festival (NASF) is held on frozen Lake Cadillac every winter.Thirsty's, a gas station on M-55 west of Cadillac, was the home of Samantha or "Sam The Bear" from the 1970s through the late 1990s, when Sam died of old age.