🔍The Estelle Tunnel was built in 1908 to explore the Castle Rock and Morning Star veins, as well as the Jefferson chimney.
⛏️Despite over 15 years of digging, the tunnel only produced a small amount of lead and silver ore.
🚧The tunnel suffered multiple collapses due to the unstable shale rock surrounding it.
🌈The crystal formations inside the tunnel create a stunning sight, adding to its allure.
🛏️An intriguing discovery in the tunnel includes a collapsed room with a bed, suggesting past human habitation.