OverviewParker Peak sits between Mount Wood and Koip Peak along the border of Yosemite National Park and the Ansel Adams Wilderness. The peak is an easy half mile scramble from Koip Peak Pass. Similar to the other peaks in the area, Parker is a scree pile of metamorphic slate.
EntemologyParker Peak (and Pass/Creek/etc) were named for an early settler of Mono County and the name dates back to at least the 1880s. (Peter Browning, Yosemite Place Names)
1) Mono Pass Trailhead (Class 1-2)
From the Tioga Road entrance of Yosemite National Park, travel 1.5 miles south to the Mono Pass trailhead at Dana Meadows. (There are bear boxes and pit toilets at the trailhead). Follow this trail SE veering left at the junction for Spillway lake. At 3.5 miles turn right onto the Parker Pass trail. Continue S/SE a the trail crests the treeline and leaves Yosemite at Parker Pass. Past the pass the trail descends for 1mi (losing 250') passing numerous unnamed lakes in the upper portion of the Parker Creek watershed. After bottoming out, the trail begins a 2000ft switchbacking ascent up the Parker's north flank. Leave the trail at any point on the final switchback and head offtrail 1/2 mile up the scree to the peak.
2) Silver Lakes
Take the Silver Lake trail south past Anew and Gem Lake, then head north over Gem Pass and the Alger Lakes to Koip Peak Pass at 11mi. From the pass head offtrail 1/2 mile up the scree to the peak.
3) Traverse from Mt Wood
Parker is an easy (mostly flattish) 1 mile class 2 traverse from Mt Wood.