Numerous seeps and springs can be found throughout the sixteen mile stretch of the Narrows, which nourish a variety of lichens, ferns, monkeyflower, columbine, and other plants that require high amounts of water. Seeps and springs are created where sandstone meets siltstone at the base of the high walls, forcing groundwater out of the porous rock. A permit is required for any through-hike of the Narrows from the top to the bottom. For well-conditioned hikers, this trip can take twelve hours one way; it begins at a trailhead at Chamberlains Ranch. Limited overnight camping is possible in the Narrows but only with a permit from the visitor center and only in designated high-water locations.   270 220 2 84