Bald Mountain (Idaho) km²) of which have snowmaking. The slope ratings are 36% easiest, 42% more difficult, and 22% most difficult. These ratings are relative, not absolute; much of the "easiest" terrain on Bald Mountain would be rated as "intermediate" at most ski areas, as the beginner areas are on the gentler and smaller Dollar Mountain. Sun Valley's Bald Mountain is independent of the Bald Mountain Ski Area, a modest ski hill near Pierce in Clearwater County in north central Idaho. Easiest (Green Runs) More Difficult (Blue Runs) Most Difficult (Black Diamond Runs) In the NBC-TV miniseries, "", this mountain was believed to
Ski wax snow. Glide wax is selected to minimize sliding friction for both alpine and cross-country skiing. Grip wax (also called "kick wax") provides on-snow traction for cross-country skiers, as they stride forward using classic technique. Modern plastic materials (e.g. high-modulus polyethylene and Teflon), used on ski bases, have excellent gliding properties on snow, which in many circumstances diminish the added value of a glide wax. Likewise, uni-directional textures (e.g. fish scale or micro-scale hairs) underfoot on cross-country skis can offer a practical substitute for grip wax for those skiers, using the classic technique. Johannes Scheffer in "Argentoratensis Lapponiæ" (History of Lapland)