Reforesta is a non-profit association founded in 1991 and declared of Public Utility. Its projects prioritise the restoration of vegetation cover and soil, also favouring fauna and the ecosystem as a whole. In 2020, Reforesta has 25 active reforestation projects, in which it has planted 36845 trees and in which more than 10,000 volunteers have participated. Since 2013, Reforesta has been developing a reforestation project on Monte de Los Almorchones and surrounding areas included in the Regional Park, Biosphere Reserve and ZEC of the Cuenca Alta del Manzanares. Since 2013, approximately 10,000 individuals of Acer monspessulanum, Fraxinus angustifolia, Quercus faginea, Sorbus aucuparia, Betula pubescens, Taxus baccata and other species have been planted. Maintenance and summer risks were carried out in the first years, and individual and perimeter fences were installed to protect against herbivores.