In 1900, Thomas McInery began to acquire land south of Pima to sell shares in a scheme to find both gold and enough water to irrigate all of the Gila Valley. He promoted this tunnel (also called the Mammouth Tunnel and Triumph Tunnel) in a fraudulent money-making scheme before abandoning the project and leaving town. The 250-foot start still remains, dug ten feet high and eight feet wide into solid rock and accessible to exploration.
Check out the Triplog.
This hike is listed as One-Way.
When hiking several trails on a single "hike", log it with a generic name that describes the hike. Then link the trails traveled, check out the example.