A sundial known as the Millennium Monument was built above Point Udall for the New Year's celebration in 2000 — it marks the azimuth of the first U.S. sunrise of that year. From the monument an informal trail of moderate difficulty leads down to the point, composed of uplifted and rotated volcanic rock. Point Udall is the most eastern part of the United States. This is where the millennium celebration took place at midnight and at sunrise - where the sun rises first in the United States. Point Udall at the east end of St. Croix in the U.S. Virgin Islands is the easternmost point (by travel, not longitude) in the United States including territories and insular areas. It was named for Stewart Udall, United States Secretary of the Interior under Presidents John F. Kennedy and Lyndon Johnson.