The Regional Park around the axes of the lower courses of the Manzanares and Jarama rivers, colloquially Regional Park of the Southeast, is a protected area of ​​31,552 hectares located along the middle-lower course of the rivers Jarama and Manzanares, in the southeast (hence its name) of the Community of Madrid (Spain).
Laguna del Soto de las Juntas, in the vicinity of Rivas-Vaciamadrid.
It is a regional park that extends from north to south along the Jarama, where the riparian plains and some hills predominate, but the natural wealth of this space resides in the fertile cereal plains, the cuttings and gypsies of the hills , the groves and banks of the rivers and in the numerous wetlands and lagoons. One of its most emblematic enclaves are the Cerros de la Marañosa, whose maximum height is 698 m. In the area there are also archaeological and paleontological sites.
This protected space is within the municipal boundaries of Velilla de San Antonio, Ciempozuelos, Titulcia, Rivas Vaciamadrid, San Martin de la Vega, Morata de Tajuña, Arganda del Rey, San Fernando de Henares, Pinto, Mejorada del Campo, Getafe, Valdemoro , Aranjuez, Chinchón, Torrejón de Ardoz, Coslada and Madrid.