Área protegida municipal Ecoparque Encantado: A Natural Monument in the Southern Bolivian Andes

Ecoparque Encantado was officially established as a protected area on 19 May 2015, when the Autonomous Municipal Government of Tupiza promulgated Ley Municipal 092/2015. The law formally designated the area as a Municipal Protected Area, or Área Protegida Municipal, under the category of Natural Monument.

This designation corresponds to IUCN Category III, a classification specifically intended to protect individual natural features of outstanding ecological, scenic, or scientific value, such as notable landforms, canyons, or vegetation communities. The creation of the protected area reflects the municipality's recognition of the ecological and landscape significance of the dry-valley and canyon systems surrounding Tupiza, and of the need to anchor their conservation within a formal legal framework at the local level.

The landscape of Ecoparque Encantado is defined by the rugged transition between the Eastern Cordillera of the Andes and the deep inter-Andean valleys of the Tupiza and San Juan del Oro rivers. The area sits on the western flank of the cordillera, between the Chichas and Lípez ranges, an arrangement that produces a strongly dissected topography of folded ridges, slopes, quebradas, and steep-sided valleys.

Cañón del Duende, located along the eastern edge of the protected area, is one of the most representative landscape features and exemplifies the erosional dynamic that shapes the region. Altitudinal variation is significant, ranging from inter-Andean valley environments near 2,950 meters to prepuna and low puna settings above 3,500 meters, creating a stepped vertical profile that influences both climate and vegetation.

Underlying geology plays a major role in the visual character of the area. The landscape is built on a mix of Lower Ordovician sedimentary rocks, Cretaceous and Tertiary sediments, Quaternary fluvial and piedmont deposits, and Tertiary igneous intrusions. Reddish polymictic conglomerates of the Tupiza Formation, together with later terrace and pluvial deposits, contribute to the warm-toned canyon walls and valley floors that give the area much of its visual identity.

Ecologically, Ecoparque Encantado sits at the interface between inter-Andean dry valleys, the prepuna, and the lower reaches of the Andean puna. Its location in the rain shadow of the central Andes, combined with the influence of dry winds from the Altiplano, produces an arid to semi-arid setting where vegetation patterns are strongly controlled by altitude, slope exposure, and access to underground or seasonal water.

The vegetation is organized into several distinct formations. These include high-Andean pajonales, xerophytic and semi-humid puna shrublands and grasslands, prepuna matorrales, and valley-bottom communities with denser woody cover. Botanical surveys have documented at least 45 plant families, with Asteraceae, Cactaceae, Fabaceae, Poaceae, and Bromeliaceae among the most diverse, and a notable presence of endemic species associated with the relatively recent uplift of the central Andes.

A distinctive ecological feature of the area is the presence of plant communities with Chacoan floristic affinity, mixed with elements typical of high-Andean ecosystems and even Tucumano-Bolivian influences. This combination produces a vegetation mosaic of considerable biological interest, particularly given that the original dry forests of the southern Bolivian Andes have been severely reduced and fragmented by agriculture, fuelwood harvesting, charcoal production, and urban expansion.

The wildlife of Ecoparque Encantado reflects the mosaic of dry valley, prepuna, and low puna habitats that the area protects, although decades of habitat pressure have left the fauna more reduced and patchy than the vegetation diversity would suggest. Surveys coordinated through the Centro de Interpretación Green Planet and related fieldwork have documented at least 65 bird species, 12 mammal species, seven herpetofauna species, and roughly 43 insect species within and around the area.

Mammals include puma, Andean fox, vizcacha, hurón, and zorrino, among others, representing nine families across the recorded range. Many of these species appear in Bolivia's Red Book of Vertebrates, reflecting the fragile conservation status of wildlife in the region. Higher-elevation sectors in particular show signs of faunal emptiness, a pattern associated with habitat fragmentation, loss of movement corridors, and long-standing human pressure.

Birds are the most diverse component of the fauna, with 22 families recorded and the Emberizidae and Tyrannidae standing out for their species richness. Endemic species and threatened species, such as the Andean condor and high-Andean partridges, are among the area's most significant ornithological highlights, particularly in prepuna and mesothermal environments. Knowledge of reptiles, amphibians, and insects remains comparatively limited, indicating that further inventories would likely expand the known biodiversity of the protected area.

Ecoparque Encantado holds substantial conservation significance as one of the few formally protected remnants of the inter-Andean dry forest and valley landscape in the southern Bolivian Andes. The area's IUCN Category III Natural Monument status is specifically intended to safeguard natural features of high ecological, scenic, and scientific value, including the deep quebradas, eroded canyons, and dry-forest communities that characterize the region.

A central conservation concern is the severe historical degradation of the surrounding landscape. Original dry woodlands have been heavily fragmented by agricultural expansion, urban growth, and intensive extraction of fuelwood, charcoal, and forage, leading to documented processes of soil erosion and desertification in parts of the region. Within the protected area, conservation efforts aim to preserve the connectivity, microclimatic variation, and ecological gradients that still support endemic plants, Chacoan-affinity species, and high-Andean wildlife.

The area's ecological importance is reinforced by its role in protecting water resources. Its geology favors infiltration and the formation of small aquifers within synclinal structures, supporting permanent streams that feed the Tupiza and San Juan del Oro river systems. Maintaining these hydrological functions, along with the integrity of dry-forest patches, is a key rationale for the area's protected designation.

The Ecoparque Encantado is closely tied to the municipality of Tupiza, a historic town in the department of Potosí whose identity is shaped by its surrounding Andean valleys. Local communities have long interacted with this dry-valley landscape, using native species such as churqui, algarrobo, molle, and palqui for traditional medicine, rituals, and everyday needs, including fuelwood and forage. This history of use is reflected in the cultural importance of the area's plant resources and in the recognition of the landscape as part of the region's heritage, alongside broader Andean traditions connected to the valleys of the Chichas range.

Ecoparque Encantado combines several distinctive qualities within a relatively compact area: dramatic dry-valley and canyon scenery, a stepwise altitudinal gradient between warm inter-Andean valleys and cool prepuna environments, and a vegetation mosaic that mixes Chacoan, prepuna, and high-Andean elements. Its protection of dry-forest relics, endemic plant species, and emblematic wildlife such as the Andean condor and puma gives it both regional conservation importance and strong scenic identity.

Because Ecoparque Encantado is a dry-valley and high-Andean environment, seasonal conditions strongly shape the experience of the landscape. The rainy season, between November and March, brings most of the year's precipitation, which can make quebradas greener and improve wildlife visibility, while also creating more variable trail conditions. The dry months, particularly June, July, and August, offer clearer skies, more stable weather, and easier access to canyon scenery such as Cañón del Duende, though vegetation appears more sparse and temperatures can drop sharply at higher elevations. Visitors sensitive to cold should consider that night-time temperatures in the puna can fall well below freezing in any season.