In the northwest portion of Zion National Park, in an area known as the Kolob Terraces, are fantastic canyons that few visitors experience. Just getting to Subway Falls requires about five miles of walking and wading as you make your way up the left fork of Oak Creek. As you progress, the canyon becomes more and more narrow and interesting. Subway Falls guards the entrance to "The Subway", an almost round slot canyon that requires swimming and rappelling to negotiate its length from the top. This was my second visit to this location - this time a slight cloud cover helped lower contrast to make this photograph work.