📍 Spring Mill State Park – Mitchell, Indiana This park is packed with history, adventure, and natural beauty all in one stop. We think it’s Indiana’s most underrated state park! 🛶 Take the Twin Caves boat tour and float through underground passages (only $3 per person, but get there early!) 🏡 Check out the Pioneer Village, with over 20 historic buildings from the 1800s. 🚀 Visit the Gus Grissom Memorial, honoring the Indiana-born astronaut and American hero. 🪨 Explore Donaldson Cave, one of