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Photo: Rracecarr at English Wikipedia, Public domain via Wikimedia Commons
Excellent views and a lookout tower. It takes about 4 hours round trip via Humber Park and Saddle Junction, or via South Ridge Trail.
Tahquitz Peak is a granite, 8,846-foot-tall (2,696 m) rock formation located on the high western slope of the San Jacinto mountain range in Riverside County, Southern California, United States, above the mountain town of Idyllwild. Tahquitz has a steep approach hike, leading to a roughly 1000-foot face. Tahquitz, which can refer to both the rock outcrop and the outcrop's parent peak, is a popular hiking destination to the fire lookout station and the rock climbing area.
© OpenStreetMap contributors
The highest peak in the range, over 10,800 feet elevation. It is about 7-8 hours round trip, and has a lot of elevation gain. An easier way to reach the peak is via the Palm Springs Tramway, but the Idyllwild route is a beautiful and less traveled way to do it.