Pico El Yunque or El Yunque Peak is a mountain that is located fully within the boundaries of the El Yunque National Forest, part of the U.S. Forest Service, which is the only tropical rainforest that belongs to the U.S. Forest Service. The peak itself is one of the highest in Puerto Rico, standing at 1,080 meters (3543 feet) above sea level. The peak is nearly always covered in thin mist and, due to its high humidity, a quick shower develops during some afternoons.