Sequoia National Park: Emerald Lake hike October 06, 2016 "The Lakes Trail, one of the most popular hikes in Sequoia National Park, climbs through dense forest to a landscape of polished granite dotted with four beautiful lakes and set amid a backdrop of rugged ridges anchored by Alta Peak." "Watchtower Trail travels for a half mile along a ledge blasted from a sheer cliff high above the Marble Fork of the Kaweah River canyon." 9,230-ft. at Emerald Lake View fullsize Ranger off-duty. View fullsize View fullsize