Old Hundred Gold Mine Tour — Roadside & Outdoor Oddities in Durango
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Entry No. 43 — the Durango file — filed under: underground

Old Hundred Gold Mine Tour

Three German brothers staked this claim in 1872, a mining company sank over a million dollars into it, a corporation poured in six million more — and every last one of them died broke. You ride an electric mine train one-third of a mile into Galena Mountain, drop to a constant 48°F, and stand next to ore veins that broke four generations of investors while a veteran miner demonstrates the pneumatic drill that blew the rock apart. Water drips off the ceiling onto your hard hat, the train echoes, and somewhere deeper in the dark a raise cage still hangs where miners used to climb between levels.

The story

In 1872, three German brothers staked a claim high on Galena Mountain, convinced they were sitting on the quartz vein that would make them kings of the San Juans. They were wrong. Over the next several decades, a succession of mining companies swallowed a million dollars here, six million dollars there, carving out drifts and blasting through solid granite—only for every single investor involved to end up bankrupt. The Old Hundred isn't a monument to frontier riches; it's a multi-million-dollar tombstone to pure human stubbornness.

When you board the yellow electric mine train—the same open-air man-trip cars miners rode to start their shifts—you follow that exact paper trail 1,300 feet into the mountain's damp core. The light drops off fast. Within fifty yards, the temperature plunges to a constant 48°F, and ground water drips off heavy timber shoring straight onto your yellow plastic hard hat. Deeper down the tunnel, past rusted rail tracks and exposed veins, a raise cage still hangs frozen in the dark where men once scrambled between vertical shafts.

What keeps this from feeling like a sterile museum display is the sheer noise. Your guide—often a veteran who actually knows what rock dust smells like—fires up authentic pneumatic equipment right in front of you. When the air-powered slusher and rock drills kick on, the earsplitting hammer against solid rock echoes off the low ceiling, giving you an uncompromising taste of the deafening, bone-rattling labor that went into chasing gold that was never really there.

What it's like

Keep your eyes peeled on Highway 110 north of Silverton; the turnoff onto County Road 4A comes quick and is notoriously easy to miss. Park in the unpaved lot (there is plenty of room for RVs), put on a thick hoodie before you walk to the ticket booth, and strap on your helmet. The walking underground is flat, easy, and level after you step off the train car—no steep stairs or tight crawling required. Once the train hauls you back out into daylight, take your ticket over to the covered outdoor sluice boxes to pan through real crushed ore for copper, silver, and tiny gold flakes.

The move: Drive the hour from Durango up to Silverton, ride the man-trip underground before lunch, pan for silver and gold at the covered picnic area after, then grab a green chile burger in town on the way back.

📍 Before you go Free on-site parking including RV and bus spaces. Tour is electric train then easy walking — no significant climbing underground. County Road 4A off Highway 110 north of Silverton; the turnoff is easy to miss. Groups of 20+ require advance reservation; walk-ins fine for individuals.

Where: 721 County Road 4A, Silverton, CO 81433

Hours: Added 2026-06-21 — confirm current hours before you go.

⚠ Seasonal or scheduled — always check before you go.

#underground #mining-history #mine-train #san-juans #seasonal #family-ok

Pair it with

  • Christ of the Mines ShrineDrive four miles back toward town to see the twelve-ton Carrara marble shrine built to watch over the men working deep inside these mountains.
  • Sunnyside Mill foundation & ruinsFollow the dirt road further up the valley into Eureka to explore the vast concrete tiered ruins where San Juan gold ore was crushed.
  • Hillside CemeteryPair your underground trip with a walk up the unpaved paths of Boulder Mountain, where three thousand early Silverton miners and pioneers lie buried.
  • Grand Imperial HotelHead into Silverton's historic core to grab lunch inside the 1880 hotel where early mining speculators squandered what little gold they found.

Good to know

How cold does it get inside the mountain?

The interior stays a constant 48°F (9°C) year-round. Bring a jacket or warm sweatshirt, even if it feels hot out in Silverton.

Is there steep walking or climbing involved on the tour?

No. You ride an electric mine train 1/3 mile into Galena Mountain, and the guided walking portion inside is on flat, level gravel.

Do I need to make advance reservations?

Walk-ins are standard for individual travelers and small groups. Advance reservations are only required if you are bringing a group of 20 or more.

How do I find the mine turnoff from Silverton?

Head north out of Silverton on Highway 110 toward Eureka, then take County Road 4A. Watch the road signs closely because the mountain turnoff is easy to overshoot.

Plan a visit & invite your people →

Further reading: rmpbs.org · colorado.com · westernmininghistory.com · uncovercolorado.com · Official site · durango.com

last checked: 2026-06-21