79 and go south for 27 miles to Chihuahua Valley Rd. Go east 6.5 miles. When the road makes a sharp right turn, drive straight ahead, crossing the road. Travel 2.9 miles on a graded dirt road. Field station is on the left side.
Facilities are available.
Allow 2 hours driving time from San Diego. From I-8 go south on Harbison Canyon Rd. Left on Sloan Canyon Rd. This graded road is suitable for sedans. Park at the end of Sloan Canyon Rd., taking care not to block the two gates.