Monster Mountain is a unique experimental forest, which stores a memory the size of two hundred years. It is a wonderful area located in Constantine, and it rises to about 700 meters above sea level, and it includes a barn that was one of the largest entertainment and leisure hangars in the country. It is also the favorite Qibla for many Algerians, as it contains many forest species that were brought from different parts of the world. These forests, spread over 19 hectares, are distinguished by their biological diversity, including core pine trees and cedar trees. The forest is also famous for the rise of giant "sequoia" trees, and embraces the mountain of the monster, in which there are still evidence of an ancient cork oak forest, and many interesting forest trees. It should also be noted that while three of the four lakes of the Experimental Beast Mountain Forest had It dried up completely, the fourth lake is still alive, and in the middle of it is a small island of reeds, which incubates carp, as well as other types of ducks, water chickens, and others.