Frequently Asked Questions

Prepare for your visit to Adventure Mining Company.

Are reservations required?

  • We do HIGHLY recommend reservations. Walk-in tours are allowed, but availability can be limited. Reservations can be made anytime online up to 24 hours before the tour time, by calling 906-883-3371, or by stopping by the mine site. 

Is this a walking tour?

  • The tour starts with a very short vehicle ride from the tour office to the mine entrance. Once at the mine entrance, the entire tour is walking on graveled trails with some larger rocks and will have loose footing. There are only about a dozen steps on the entire tour, most is level walking (the Miners and Captains tours will have steep slopes).

Can young children participate on the tours?

  • Yes, the 90-minute Prospectors Tour is available and suitable for all ages. The tour is about ¾ mile of walking. Young children may be hand carried or in front-style child carriers. Back pack carriers and strollers are not allowed for safety reasons.

How old do children need to be for the Miners Tour with rappelling or Captains Tour? 

  • We recommend a minimum age of 13 years, and a minimum weight of 70 lbs. Children that weigh less than 70 lbs may have difficulty during the rappelling portion. However, the Prospectors and Miners Tours do overlap for the first 90 minutes, so families can easily take the first part of the tour together, and then those rappelling continue for the remainder of the Miners Tour while those not rappelling can exit after the Prospectors portion.

Do you offer tours on rainy days or very hot/cold days?

  • Yes, tours are offered every day regardless of weather. There is no danger of the mine flooding, and the temperature underground remains around 45 degrees F regardless of outside temperature. A light jacket is recommended. 

What type of payment do you accept?

  • We accept Cash, all major credit/debit cards, and most contactless payment methods (apple pay, etc.). Pre-payment is not required for most tour reservations, but we will request a name and phone number.

Are dogs allowed on tours?

  • In most cases on the Prospectors Tour, yes. Out of courtesy to other guests, we do require leashes while on site, and please do not bring dogs into the gift shop without consulting our staff first. We will also verify that other guests that may be on your tour are comfortable with having a dog joining them. We will not promise your dog can join a tour, but we will do our best to accommodate.
  • We also often do have our own dogs on site that may be free ranging near the gift shop. They are friendly (and large) Newfoundland/Poodle mixes… but like any dogs they may respond if they feel threatened or uncomfortable. We can happily put our dogs inside and away, if this is of any concern please just let us know!

Is the mine safe?

  • Yes! The mine is visited by thousands every year and is very safe. To answer common questions…there are no toxic or explosive gasses, no dust in the air, and the mine is actively maintained to provide a safe experience.

Are there discounts for large groups?

  • We do offer some discounts for organized groups of 12 or more. For any discounts, we require prior arrangements and a prior reservation for the group. Please contact us for more information.

Can we mineral collect/prospect on the mine site?

  • We do not allow any copper/mineral/artifact/specimen/plant collecting on the property. Please respect our historical site and not disturb any artifacts you may see.

Where are you located?

  • We are located off highway M-38 in Greenland, Michigan 38 miles southwest of Houghton and 12 miles east of Ontonagon. The address of the mine is 200 Adventure Ave Greenland, MI 49929
  • For GPS units, use “1000 Plank Road, Greenland, MI” as the previous address is not in some databases.

What are your hours?

  • Our season begins Memorial Day and runs through mid-October. During the season we are open Monday-Saturday from 9-6 and Sundays from 11-6 Eastern. After Labor Day, we are closed on Wednesdays. See details here.

Do you offer tours for student groups? 

What shoes should I wear? 

  • Trails underground are sometimes rough so wear appropriate, closed-toe footwear.

Can I bring my camera and take photos during the tour? 

  • Yes! Cameras are always welcome.