Devils Peak, Mountain summit on Santa Cruz Island, Channel Islands National Park, California, United States

Devils Peak is a mountain summit on Santa Rosa Island in the Channel Islands that rises steeply from the ocean. The rocky formations display sharp angles and dark coloring that make the peak recognizable from the surrounding waters.

The summit served sailors as a navigation marker starting in the early 19th century when ships regularly passed between the islands. The recognizable shape made it valuable for maritime travelers to chart their courses through this area.

Devils Peak lies on Santa Cruz Island, within Channel Islands National Park, on land owned by The Nature Conservancy. The name appears in variant forms, including Mount Diablo and Diablo Peak, and visiting the area requires a permit. The peak is also called the tallest point on the Channel Islands of California.

Access is difficult and requires careful planning for safety and environmental protection on this protected island. Visitors need to check conditions and any restrictions before attempting to visit the area.

Devils Peak is the highest point on any ocean island in the contiguous 48 states, a few feet above Mount Constitution on Orcas Island in Washington. It is also the tallest summit in Channel Islands National Park, standing on Santa Cruz Island land owned by The Nature Conservancy.