Doyel Valley Overlook
Doyel Valley Overlook, Mammoth cave National Park
Entrance
The Historical Entrance to Mammoth Cave
Sloan's Crossing Pond
Sloan's Crossing Pond - a surface pond is an unusual feature in this area rife with sinkholes
Boardwalk
The boardwalk trail around the perimeter of Sloan's Crossing Pond, Mammoth Cave National Park, Kentucky
