Located at an altitude of over 2,000 meters, the Mexico basin is home to one of the World most populated metropolitan areas, with more than 20 million inhabitants. It is surrounded by mountain systems that exceed 3,000 meters above sea level and crossed by isolated hills and small mountain ranges of more than 2,500 m that are small islands of biodiversity and nature in an urban sea. Unknown and ignore by its inhabitants they suffer constant mistreatment. Nevertheless, they continue to contribute to improving the conditions and quality of life in the basin. They still are reservoirs of environmental, physical and biogeographic characteristics, they significantly improve air quality and are historical and cultural references for the people who inhabited the basin. These unknown hills and mountain ranges also deserve attention from mountain studies and that is what we are trying to do from the Autonomous Metropolitan University in Mexico.