The Upper Emerald Pool trail is a wonderful hike in Zion National Park, Utah. It ends in this small lake - a tiny island of green in the dessert - that is surrounded by cliffs of sand stone casting shadow on it. Be sure to take a good amount of water with yourself on this hike, because once outside of the shadow you'll desperately need it!
Many panoramas of Zion National Park's trails, views, canyons, and peaks. Zion National Park is known for it large exposure of the Navajo sandstone's steep red walled cliffs and world classic canyons and canyoneering routes.