A feature of the Sierran crest zone geology: Round Top

Explore Reno-Tahoe and beyond
Mount Tallac skyline range

Custom Search


Pin Round Top
Round Top seen from the Pacific Crest Trail near Frog Lake, Alpine County, California (June 29, 2014)

Round Top (10,381 ft.) is a craggy mountain of volcanic origin. It is a relic from the time that began about thirty million years, when volcanoes erupted in this area—in what is now the Mokelumne Widerness within the Eldorado National Forest.

Round Top is surrounded by many other Central Sierran features of geological interest as well as by scenic lakes including its namesake Round Top Lake, Winnemucca Lake and Woods Lake. This is a popular summer hiking area, just south of the Carson Pass on Highway 88. The Pacific Crest Trail (PCT) passes by to the east of the Round Top massif. The hiking trail that branches off the PCT near Frog Lake and continues on to Winnemucca Lake, Round Top Lake and Fourth of July Lake offers various views of the peak and fractures of the Round Top mountain area.