View of Valles Caldera National Preserve’s central resurgent dome, Redondo Peak, viewed in the distance from Valle San Antonio. Valles Caldera is the model for resurgent calderas, meaning that it is considered the best example of this volcanic landform in the world. Valles Caldera’s resurgent dome, Redondo Peak, is approximately 3,300 feet (1,000 meters) higher than the caldera floor and reaches an elevation of 11,258 ft (3,431 m). Extensive studies of Valles Caldera since the 1960s have been essential for understanding the origin and eruption dynamics of caldera resurgence. Learn more about resurgent calderas at https://www.nps.gov/articles/000/resurgent-calderas.htm. Photo by Irene Owsley/NPS