Statistics: South Lake to Taboose Pass Trailhead via Bishop Pass, Thunderbolt Col, Potluck Pass, Chimney Pass, Mather Pass and Taboose Pass. Detour ski into Veneecher Needle North Bowl. 32 miles, 8470 feet elevation gained, 12480 feet elevation descended. Maximum slope angle 35+ degrees (on Potluck and Chimney Passes).