Consisting of 25,500 acres (103 km2) of land in San Bernardino County, California, the preserve features geologically interesting mountain ranges and riparian zones.

The Indian Loop Trail passes through a wetland from a perennial stream and climbs to a ridge with views of rocky peaks.

[2] The preserve is notable for its rock formations, desert-riparian corridor, and diverse ecology.

[3] In 2017, a severe flash flood caused extensive damage in Pipes Canyon.

The upper part of Pipes Canyon Trail, beyond the Olsen Ruins, was destroyed and has not been reopened.