Rock Swap
6/6/2026 to 6/7/2026 | Missouri Mines State Historic Site | PARK HILLS, Mo.
Missouri Mines State Historic Site welcomes the public for the 2026 Rock Swap! This annual event features free tours of the site's Powerhouse Museum and Interpretive Trail, as well as opportunities to buy, sell, swap and admire rocks, mineral specimens, fossils, rock jewelry and rock art. The event is open to the public, and admission is free.
Event schedule:
Saturday, June 6:
- 8 a.m. to 5 p.m. – Vendor booths in the parking lot
- 9 a.m. to 5 p.m. – Free self-guided museum tours
- 10 a.m. – Free guided Interpretive Trail tour
- Noon – Free guided Interpretive Trail tour
- 2 p.m. – Free guided museum tour – same-day registration required on-site
Sunday, June 7:
- 8 a.m. to 5 p.m. – Vendor booths in the parking lot
- 9 a.m. to 5 p.m. – Free self-guided museum tours
- 10 a.m. – Free guided Interpretive Trail tour
- Noon – Free guided museum tour – same-day registration required on-site
Registration for Guided Museum Tours:
The free guided museum tours are limited to 20 participants and require registration. Those who want to take part must sign up at the Missouri State Parks booth beginning at 9 a.m. on the day of the tour. No reservations will be accepted prior to the tour date or by phone.
Vendor Booth Setup and Application:
Rock hobbyists and vendors wishing to set up a booth must complete an application. Booth spots are free but are limited and must be reserved in advance. Applications are due by March 31, 2026.
All booth spots will be outdoors in an open area, approximately 15 by 15 feet. There will be no electricity or amenities provided at booth spots. Vendors will need to bring their own tables, chairs and shade tents if desired.
Please contact the Missouri Mines State Historic Site office at 573-431-6226 for an application or more information.
Missouri Mines State Historic Site Contact Information:
- Address: 4000 State Highway 32, P.O. Box 492, Park Hills, MO
- Phone number: 573-431-6226