Mount Pluto, California, Mountain summit in Placer County, California, United States

Mount Pluto is a mountain summit in the Sierra Nevada region of Placer County, California, reaching 2,626 meters in elevation. The upper sections feature steep slopes with loose stones scattered across the hiking paths.

The peak formed approximately 2 million years ago through volcanic activity in the region. Lava flows and mudslides from that period shaped the surrounding landscape that visitors see today.

Mount Pluto's name comes from the Roman god of the underworld, a nod to its volcanic past. Today the Northstar California ski resort covers part of the peak, and its slopes host winter sports within the Sierra Nevada range.

A chairlift system provides access to higher elevations and reduces hiking time. The best season for visiting is late summer through early fall when trail conditions are most favorable.

Mount Pluto is an extinct volcano that erupted about 2 million years ago, sending lava and mudflows that dammed Lake Tahoe. Northstar California ski resort covers part of its 2,626-metre summit.