Colorado City Tunnel Mines

4.7/5
(1.7K) · Historical landmark in Idaho Springs, United States
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Experience the wonder of ingenuity, technology, and entrepreneurial spirit that is the Argo Mill & Tunnel with a guided walking tour. Situated in Historic …

Reviews

Tripadvisor
4.7/5 · 1,727 reviews
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Mar 30, 2025
They are open until 5:00 but stop giving tours at 3:00. We arrived at 3:30 and were not able to take a tour. It was disappointing having driven over an hour and a half to the location.Full review by Departure42835665508
Dec 29, 2024
Great overview of the Gold mining process and view of the issues miners faced during the early days. Nice interactive involvement for kids as well.Full review by Connector11931792163
Aug 26, 2024
This is an interesting place. The panning for gold was the best part. The tour of the mine was very limited. The guide was nice.Full review by Z6137BOscottm
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Facts

Questions & answers

Q:
Do we have to make a reservation, or can we take a tour, the day of/when we get there?
A:
I would reserve to be safe. If there is room you can do a walk in.
Q:
Is this tour accessible? I have a mobility scooter.
A:
No. There are several set of steps that we went up and down. The outdoor section of the tour is accessible, but going inside the mill is not.
Q:
Do you actually go down in the tunnel? Will I get claustrophobic?
A:
Hell there. You walk into it, is a more accurate description. It’s a tunnel bored into the side of a hill. It’s spacious and well lit with a solid walking path. You will go 110’ in. There is a sturdy …
A:
Hell there. You walk into it, is a more accurate description. It’s a tunnel bored into the side of a hill. It’s spacious and well lit with a solid walking path. You will go 110’ in. There is a sturdy wooden deck outside that you can stay on if you do not wish to go in.
Q:
We'd like to pan for gold AND gems. Is this possible on 1 tour?
A:
I don't think that gems are a part of the panning activity at the ARGO mine; just gold. Of course it's a simulated and staged activity meant to give the visitor an idea of the patience …
A:
I don't think that gems are a part of the panning activity at the ARGO mine; just gold. Of course it's a simulated and staged activity meant to give the visitor an idea of the patience which was required of those who did it for a living during the gold rush. Have fun!
Q:
We'd like to pan for gold AND gems. Is this possible?
A:
Yes, for an additional fee, they sell the bags with different gems.
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