Cerro de la Tortuga

Cerro de la Tortuga is a state park in Morelos, Mexico, protecting a hill whose profile resembles a turtle (tortuga in Spanish) when viewed from the surrounding valley. Located in the municipalities of Zacatepec and Puente de Ixtla in the south-central zone of Morelos, the park covers 310 hectares at elevations between 915 and 1,200 meters above sea level within the Balsas River basin. ^[1] Declared a Natural Protected Area in September 2012, the park protects one of the last remnants of tropical dry forest (selva baja caducifolia) in the center-south of Morelos. Despite its small size, it functions as an important reservoir of biodiversity in a landscape dominated by agricultural fields and human settlements.

Despite its modest area of 310 hectares, Cerro de la Tortuga supports remarkable vertebrate diversity. A total of 125 bird species have been recorded in the park, of which 11 are under some threat category and 22 have endemic status, making it an important site for avian conservation in Morelos. ^[1] Mammals are well-represented with 30 species documented, including 14 bat species (Chiroptera), 7 carnivores, and endemic species such as Tlacuatzin canescens and Sylvilagus cunicularius; the lesser long-nosed bat (Leptonycteris yerbabuenae) is the only threatened mammal species recorded. ^[2] Herpetofauna comprises 28 species across 15 families: 10 amphibian species and 18 reptile species, of which 12 are endemic to Mexico.

The park's primary vegetation is tropical dry forest (selva baja caducifolia), one of the last remnants of this ecosystem in the center-south of Morelos. ^[1] Characteristic tree species include cuachalalate (Amphipterygium adstringens), huizache (Acacia spp.), cazahuate (Ipomoea pauciflora), palo dulce (Eysenhardtia polystachya), pochote (Ceiba aesculifolia), and cirian (Crescentia alata). Gallery forest along the Apatlaco River corridor supports moisture-loving riparian species. Approximately 100 vascular plant species have been documented in the park, including species with traditional medicinal and food value. Secondary vegetation patches are present in areas recovering from past disturbance.

Cerro de la Tortuga is situated within the Balsas River basin, a structural depression of southern Mexico that lies between the Trans-Mexican Volcanic Belt to the north and the Sierra Madre del Sur to the south. The hill's characteristic turtle-shaped profile results from differential erosion of the local bedrock over geological time. The region's geology reflects ancient basement rocks and sedimentary deposits. Soils in the park area are shallow and rocky on exposed ridges, transitioning to deeper alluvial soils near stream corridors. The Apatlaco River traverses the broader park area, providing riparian gallery forest habitat. ^[1] The low elevation of 915-1,200 m places the park well below the volcanic highlands of the Chichinautzin field to the north.

Cerro de la Tortuga has a warm subhumid tropical climate consistent with its location in the Balsas River depression of southern Morelos. ^[1] Temperatures are warm year-round at the park's elevation of 915-1,200 meters. A pronounced dry season from November to May corresponds with the leafless period of the tropical dry forest, when deciduous trees shed their leaves to conserve water. The wet season from June to October brings concentrated rainfall that triggers rapid greening of the vegetation. The warm, dry conditions of the Balsas basin distinguish this park climatically from the cooler highland forests to the north.

The south-central Morelos region has been inhabited since pre-Columbian times, with Nahua communities occupying the Balsas River basin lowlands. The community of Tetelpa, associated with the park's ejido, has maintained traditional connections to the land surrounding Cerro de la Tortuga. Post-revolutionary agrarian reform distributed communal land rights to ejido communities in the region, and ejido members from Tetelpa remain key stakeholders in the park's management. The park's establishment in 2012 was driven by recognition of the ecological importance of the remaining tropical dry forest, as surrounding agricultural conversion had reduced native vegetation cover substantially in prior decades. Traditional uses of the forest for medicinal plants, timber, and food resources persist among elder community members.

Cerro de la Tortuga was officially declared a Parque Estatal (State Park) and Natural Protected Area by decree of the Morelos state government in September 2012. ^[1] The protected area was initially delimited at 292.552 hectares and subsequently expanded to 310.199 hectares. Management is the responsibility of the Morelos Secretary of Sustainable Development (Secretaria de Desarrollo Sustentable). Community conservation brigades have been established with local ejido members from Tetelpa, equipped with protective gear, tools, and radio communication for environmental monitoring. Educational programs for schoolchildren and community productive projects such as aromatic plant propagation and apiaries complement the management strategy.

Cerro de la Tortuga is accessible from Zacatepec, just 3 km away, and from Puente de Ixtla in the municipality of the same name. The distinctive turtle-shaped silhouette of the hill is a landmark visible from the surrounding valley and is the park's primary visual attraction. Trails through the tropical dry forest offer birdwatching opportunities, with 125 species documented including endemic and threatened avifauna characteristic of the Balsas basin. Seasonal streams within the park attract wildlife during the wet season. Community-led interpretive programs connect visitors with local knowledge of medicinal plants and the ecological importance of tropical dry forest. The park serves as an accessible natural area for residents of Zacatepec and Puente de Ixtla, supporting environmental education for school groups from surrounding communities.

The park is located 3 km from Zacatepec, which serves as the primary access point. Zacatepec and Puente de Ixtla are connected by highway to Cuernavaca (approximately 40 km north) and to other towns in southern Morelos. Public transportation options connect the area to Cuernavaca and Mexico City. Visitor facilities within the park are modest, with trail access managed in coordination with the ejido of Tetelpa. The Morelos Secretary of Sustainable Development oversees management and can provide information on access. The dry season from November to May offers the most accessible trail conditions. The wet season brings the tropical dry forest to full leaf, offering a dramatic contrast to the dry-season landscape. No camping or commercial services are available within the park boundaries.

Cerro de la Tortuga faces conservation threats typical of isolated forest fragments in agricultural landscapes: encroachment by subsistence farming, livestock grazing, illegal timber extraction, and invasive species. The park's 310 hectares represent one of the last remnants of tropical dry forest in the center-south of Morelos, making its protection critical for regional biodiversity. ^[1] Researchers have highlighted the park's role as a potential anchor in a network of conservation archipelagos that could maintain connectivity between protected areas in southern Morelos. Community fire watch networks involving ejido members provide early detection capability. Long-term conservation depends on maintaining the ecological integrity of the surrounding agricultural matrix and preventing further fragmentation of the remaining forest patches.