 During winter , visitors to the forest can participate in activities including snowmobiling , snowshoeing , and downhill and cross @-@ country skiing . The Bogus Basin ski area is located within the forest north of Boise and has 7 chairlifts and 53 runs on 2 @,@ 600 acres ( 11 km2 ) of skiable terrain . There are 137 miles ( 220 km ) of groomed snowmobile trails in the Garden Valley system in the Emmett Ranger District and several Mongolian @-@ style yurts available for rental in winter . 
