Brown County State Park

Brown County State Park covers nearly 16,000 acres of steep forested hills near Nashville, Indiana, in the heart of a region nicknamed the Little Smokies. Indiana's largest state park draws visitors for fall color, scenic drives, Abe Martin Lodge, and more than twenty miles of hiking trails through fog shrouded ravines that glaciers never reached.

Southern Indiana sits on a Mississippian limestone belt that produces the state's famous geodes. The Indiana Geological Survey documents geodes in Harrodsburg Limestone and Ramp Creek Formation exposures across Brown, Monroe, Morgan, Lawrence, and Washington counties. Geodes weather from dolostone and limestone, concentrate in stream gravels, and line cavity walls with quartz, calcite, and occasionally barite or other minerals. Brown County is part of that belt, and Bear Creek northwest of Nashville is a well known regional geode locality on private and forest land outside the park.

Indiana DNR administrative rules prohibit damaging, interfering with, or removing rocks, minerals, fossils, artifacts, or other natural features on any DNR property unless specifically authorized. Brown County State Park is not an exception. You may hike past limestone and dolostone in trail cuts and study geode geology in the nature center, but you may not collect specimens inside the park gates.

Come for fall color, trails, and the nature center, not for geode digging inside the park. Pay the gate fee at entry: $7 for Indiana plated vehicles, $15 for out of state plates.

Climb the 90 foot fire tower for the classic Brown County vista. Walk the CCC Trail for stonework bridges and retaining walls. Visit the nature center to see a state endangered timber rattlesnake on exhibit and learn about local geology.

If geodes are your goal, research creek access on Hoosier National Forest land or private property with landowner permission in Monroe and Brown counties. Greenhorn Creek and Beanblossom are nearby listings on this site. Always confirm land ownership and agency rules before collecting outside the park.

See other Indiana collecting areas where removal is permitted.

Brown County State Park was developed with Civilian Conservation Corps labor, and the CCC Trail still showcases stone bridges, stairways, and retaining walls from that era. Abe Martin Lodge, named for a fictional Brown County character created by humorist Kin Hubbard, anchors the park's hospitality tradition. Nashville, Indiana grew into a nationally known arts and crafts town adjacent to the park. The covered bridge at the north entrance is itself a historic structure with strict size limits that still shape how visitors enter the property today.

Brown County's steep slopes erode quickly when vegetation is disturbed. Stay on marked trails and do not dig in road cuts, stream banks, or lake shores inside the park. Removing geodes from protected land removes context that future visitors and researchers cannot recover. The nature center and trail geology displays exist so people can learn without taking specimens. Report digging or mineral theft to park staff or call 812-988-6406. Responsible visitation keeps the park focused on recreation and education rather than enforcement.