Ann from Spokane sends a  Haleakalā  National Park card.  Haleakalā is found on the island of Maui in Hawai'i. A dormant volcano is within the boundaries of the park. There is a visitor's centre at 2970 m. The  Haleakalā Observatory is also located near the visitor centre. It experiences excellent viewing conditions and very clear skies. One of the observatory's jobs is the Maui Space Surveillance  System, which tracks  satellites  and debris orbiting  the Earth.