Separating Lake Tahoe and Yosemite on the spine of the SierraNevada, the Mokelumne Wilderness is home to wildflower fields,10,000-foot volcanic peaks, and 105,165 acres of untrammeled land. This3,000-foot-deep canyon cuts through the thick of it. Take California 88from the north and stop by the Amador ranger office for a permit. Bythe time you reach the rocky canyon, six miles in, you'll have thesecret, if frigid, lakes all to yourself (look for Blue Hole, nearTanglefoot Trail, in the southwestern corner of the canyon). Tip: Bringbear spray.