W 926 HS1362 37 03 23.4 120 56 39.2 From the intersection of I-5 and Hwy 152, drive east on Hwy 152 for 0.8 mi to Billy Wright Rd. Continue east for 0.6 mi to a gravel road and turn right and immediately left on a gravel road that parallels Hwy 152. Drive 100 ft to the mark on the left. The disk is set in metal casing embedded in a concrete post, and the disk is about 0.3 ft below top of concrete, which projects about 0.3 ft above ground.