Sierra del Ajusco-Chichinautzin Biosphere Reserve Adventures

The Sierra del Ajusco-Chichinautzin Biosphere Reserve spans over 270,000 acres across the southern portion of Mexico City and into the neighboring state of Morelos. This protected area is characterized by volcanic landscapes that form part of the Trans-Mexican Volcanic Belt, featuring peaks such as Ajusco, Pelado, and Chichinautzin. Elevations range from approximately 2,300 meters to over 3,900 meters, creating diverse climates and habitats that support forests of pine, fir, and oyamel, alongside volcanic rock fields and meadows. The region sustains a wide variety of flora and fauna, including endemic and rare species such as the volcano rabbit (Romerolagus diazi) and various migratory birds. Due to its proximity to Mexico City, it serves as an important green lung and recreational area for residents and visitors alike. Hiking is the most popular activity, with trails leading to volcanic summits, clear mountain streams, and ancient archaeological sites linked to pre-Hispanic cultures. Other recreational options include mountain biking, birdwatching, and ecological tours. The reserve also plays a vital ecological role by conserving water basins, preventing soil erosion, and aiding carbon sequestration. The landscape contains archeological hints like petroglyphs and ruins related to indigenous peoples of central Mexico. Its close accessibility and combination of natural beauty and cultural heritage attract outdoor enthusiasts and scholars, providing a rich, varied experience for visitors seeking tranquility and nature close to a major urban center.