Spring Mill State Park

 nature preserve, state park, National Natural Landmark

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Spring Mill State Park, Donaldson Cave Nature Preserve, Donaldson’s Woods Nature Preserve, and Mitchell Sinkhole Plain Nature Preserve

Spring Mill abounds in endless opportunities for recreation! The restored pioneer village is a delight as you travel through time to the early 1800s.

Twin Caves is open daily from Memorial Day weekend until Labor Day 9:00 AM to 4:30 PM. Weekends only September through October 9:00 AM to 4:30 PM. Cost is $3.00 for adults and $1.00 children under twelve years of age. Tour times can be scheduled each morning at the Caves.

The Grissom Memorial honors Hoosier astronaut Virgil "Gus" Grissom, one of the seven Mercury astronauts and America's second man in space.
Activities and Facilities

* Picnic areas w/shelters (Shelter Reservations)
* Nature Center/Interpretive Naturalist Services
* Boat Motor / Electric trolling only
(limited access)
* Caves / Donaldson & Twin
* Fishing / Ice Fishing
* Hiking Trails
* Grissom Memorial
* Inn Accommodations
* Inn Restaurant
* Meeting & Conference Facilities
* Pioneer Village / Grist Mill
* Volleyball & Other Games
* Swimming / Pool (See Swim Alert)

Camping

* Electric / 187 sites
* Primitive / 36 sites
* Youth Tent Areas
* Camp Store
* Dumping Station