WARNING! Hiking and outdoor related sports can be dangerous. Be responsible and prepare for the trip. Study the area you are entering and plan accordingly. Dress for the current and unexpected weather changes. Take plenty of water. Never go alone. Make an itinerary with your plan(s), route(s), destination(s) and expected return time. Give your itinerary to trusted family and/or friends.
To hike From Flagstaff:
Take I-40W, then exit for Parks. Drive S on Garland Prairie Rd for 10 miles. Turn N onto Thomas Loop Rd. After one mile, turn W. Continue for three miles until White Horse Lake Rd intersection. Head south on White Horse Lake Rd. A signed parking area for Pomeroy Tanks will be on the left after 2.4 miles.