Trails begin from the parking lot kiosk and allow access to the six-mile length of the canyon.
From Interstate 10 northwest of Palm Springs, take Highway 62, the "Twentynine Palms Highway." About 10.5 miles north on Highway 62, turn right on East Drive. After about 200 yards, turn left into the Big Morongo Canyon Wildlife Preserve.
http://www.tripleblaze.com/trail.php?c=3&i=7762