San Clemente Canyon

San Clemente Canyon stretches between Interstate 5 and Interstate 805 with dense forest of oak trees, sycamores, and native willows creating a continuous woodland corridor. The vegetation and watercourse form a natural passage through the surrounding developed areas.

The Kumeyaay people established a village called Onap at the intersection with Rose Canyon roughly 10,000 years ago. The site served as a significant settlement for the region's original inhabitants for thousands of years.

Local activists saved this canyon from highway development in the 1970s, and it now carries the name Marian Bear Memorial Park to honor their efforts. The landscape remains a cherished green space where visitors walk through a forest that might otherwise have been paved over.

The canyon offers access from multiple trail points, particularly from Regents Road and Genesee Avenue where parking is available. Basic facilities including restrooms can be found at the main entrance area.

Visible rock formations here date back to the Eocene epoch, containing preserved fossils within sandstone layers. These geological layers reveal evidence of an ancient ocean bed that once covered this area.

Location: California

GPS coordinates: 32.84528,-117.20500

Latest update: December 8, 2025 21:09