The Hull Mine is shown just to the right of center on the 7.5 minute series Castle Dome Peak Quadrangle topo sheet. I-10 and Hwy 95 in Quartzsite. Milepost 55 is about 100 feet north of the turnoff onto Castle Dome Mine Road, which heads roughly northeast. Leave highway 95 heading roughly northeast on Castle Dome Mine Road which, at this point, is a 2-lane paved road. The paved road turns right into a facility which features a red and white checkered water tower and some hangar- like buildings.
Unpaved roads lead to the left and straight ahead.
Do not follow the paved road. Continue straight on Castle Dome Mine Road which is now unpaved. The road forks. Follow the road in the direction of McPherson Pass. The road forks again.