The mountain complex that makes up the landscape of Algarinejo reaches altitudes that range between 420 meters and the 1,213 meters Morrón peak, in the Sierra de las Chanzas. The latter, the most interesting mountainous area of ​​the municipality, has been declared a Mountain Complex of Environmental Interest, within the Special Plan for the Physical Environment. The environment is formed by a high basin with forms of mountainous countryside whose abrupt modeling is carried out by small permanent mountain streams. The vegetation stands out for its leafy Mediterranean oak forest.