Our hours for Saturday and Sunday are extended until 6pm - last tour leaves at 5:30pm.  This change is effective until August 31, and will also be in effect for Labor Day weekend.  Weekdays we will continue to close at 5pm - last tour leaves at 4:30. Additional cleaning measures are in place andd we encourage social distancing as appropriate.  We recommend reservations to minimize customer wait times.

Come by and see our new Gem Mine attraction!

Geode
Mine

Find It, Crack It, Keep It!
Everyone is Guaranteed to

Strike It Rich

Odds are once you enter the Cosmos Mystery Area’s famous Geode Mine lady luck will soon smile on you. Pick up a hand spade and start digging for your very own geode. Once you find a keeper take it over to our special hydraulic press to crack open your newly discovered treasure. You will be amazed at the beauty of the naturally formed crystals inside.

Staking Your Claim

  • $8 per geode mine entrance
  • $6 if purchased with Mystery House tour
  • *Ticket prices do not include tax
  • Geode Mine 01
  • Geode Mine 02
  • Geode Mine 04
  • Geode Mine 01
  • Geode Mine 02
  • Geode Mine 04

Cosmos Mystery Area

24040 Cosmos Road
Rapid City, SD 57702
605-343-9802

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