Cliff Cave County Park is a 525-acre public park located in St. Louis, Missouri. The park is operated by St Louis County Parks. It is named after Cliff Cave, a natural cave located in the park that is a historical and archaeologic site. The park contains woodlands, wetlands, and rocky hillsides and is adjacent to the Mississippi River. It has three trails: the Mississippi Trail, the Spring Valley Trail, and the River Bluff Trail. The Riverside Shelter overlooks the Mississippi River. An active train track runs through the park. Cliff Cave Park is part of the Mississippi River Greenway. The park won the "Best View of the Mississippi" award in 2009, which it was granted by The Riverfront Times.