Which National Park is older, Sierra Nevada National Park or Doñana National Park?
Doñana National Park Doñana National Park is a natural reserve in Andalusia, southern Spain, in the provinces of Huelva (most of its territory) and Seville. It covers 543 km² , of which 135 km² are a protected area. The park is an area of marshes, shallow streams, and sand dunes in Las Marismas, the delta where the Guadalquivir River flows into the Atlantic Ocean. It was established as a nature reserve in 1969 when the World Wildlife Fund joined with the Spanish government and purchased a section of marshes to protect it. The eco-system has been under constant threat by the draining of the marshes, the use of river water to boost agricultural production by irrigating land along the coast, water pollution by upriver mining, and the expansion of tourist facilities. It is named after wife of the seventh Duke of Medina-Sidonia.
Saguaro National Park Saguaro National Park in southern Arizona is part of the National Park System in the United States. The park land consists of two distinct areas—the Tucson Mountain District (TMD) west of the city of Tucson and the Rincon Mountain District (RMD) east of the city—that preserve Sonoran Desert landscapes and diverse fauna and flora, including the giant saguaro cactus. The volcanic rocks on the surface of the TMD differ greatly from the surface rocks of the RMD; over the past 30 million years, crustal stretching associated with the Basin and Range displaced rocks from beneath the Tucson Mountains to form the Rincon Mountains. Uplifted, domed, and eroded, the Rincon Mountains remain significantly higher and wetter than the Tucson Mountains, and the higher elevations of the RMD support plant and animal populations that do not exist in the TMD.