20 climbs · Leavenworth, WA
Clamshell Cave is a small area with several quality climbs, though it is a bit of a hike. Some of its popular climbs are Crimp Crimp Slap Throw, Pentaphobia, the highball Cube and V10 challenge Terminal Gravity. To get to the cube park 5.2 miles up the Icicle and walk up past a big roadside boulder. It is about a 10 minute hike straight uphill to the main cluster of boulders. Crimp Crimp Slap Throw is a tad west of the main cluster and Terminal Gravity is a good ways uphill.