The Mauna Kea Summit Road (known as John A. Burns Way) provides access to the Onizuka Center for International Astronomy (at elevation then climbs Mauna Kea past the Mauna Kea Ice Age Reserve to the height of at grades averaging 17% making this the third highest public road in the United States. The road is long, of which the first 6 miles (to the Onizuka Center) and the last are paved. Puʻu Wēkiu is the highest point in Hawaiʻi at and is home to Poliʻahu, Goddess of Snow. Mauna Kea Observatory on the summit, an ideal location for astronomical seeing, is under the jurisdiction of the University of Hawaiʻi Institute for Astronomy.