The Spring Valley Trail is the shortest of the three trail options in this heavily wooded 222-acre park on St. Louis’ south side. From the main parking area, the trail parallels the road and dips west into a wooded ravine. After 500 feet, turn left for a quick visit to Cliff Cave’s main entrance.
Just past the spur to the cave, the trail turns sharply uphill for 0.25 mile to a T-junction where the 1.9-mile loop begins. Tackle the route’s most challenging section to the top of the karst plateau, then hike across rolling, oak- and hickory-shaded singletrack. You’ll wind around sinkholes and over small hills to a small pond at mile 1 before turning south and touching the edge of a development at mile 1.7. A sharp left turn marks the loop’s easternmost point, just before the trail hugs the edge of the cliff above the cave entrance and backtracks downhill to the parking area.
-Mapped by Bill Yearout