The Sanctuary Trail is a 3.6-mile (5.8 km) one-way hike through Wind Cave's rolling prairies. Starting about a mile north of the Rankin Ridge fire tower turnoff, the trail meanders through open grasslands and a large prairie dog town, offering hikers a chance to observe these lively creatures in their natural habitat. The path gently undulates across the landscape, providing expansive views and opportunities to spot wildlife like bison and elk. The trail concludes at its junction with the Highland Creek Trail, allowing for extended hikes or a return trip through the serene prairie environment.