Location: 75 mi (120 km) Northeast of Jujuy, take Route 7 Map
Tel. (03886) 422 046
Area: 295 km²
Open: 9am- 6pm daily
Calilegua National Park (Parque Nacional Calilegua) is Argentina’s largest protected area of Southern Andean Yungas (cloud forests) in the northwest, covering about 76,300 hectares on the eastern slopes of the Sierras de Calilegua in Jujuy Province. It protects a rich altitudinal gradient from pedemontane rainforest to montane forest and higher grasslands, with exceptional biodiversity (hundreds of bird species, mammals such as tapir, peccary, and occasional jaguar, plus diverse plants including tree ferns, bromeliads, and valuable hardwoods). It forms part of the UNESCO Yungas Biosphere Reserve.
Best Time to Visit
The ideal period is the dry season from April
to November. Days are generally sunny with more pleasant temperatures,
trails are in better condition, and roads are more reliable. Spring is
especially good for birdwatching, hiking, and camping.
Summer
(December–March) brings frequent heavy rains typical of the subtropical
climate. Trails can become muddy or closed, streams rise, and some
higher-difficulty paths are restricted. Always check the Servicio
Meteorológico Nacional forecast before and during your visit.
Temperatures vary with elevation (cooler at higher altitudes); nights
can be chilly even in the dry season. Carry layers.
How to Get
There
The park is roughly 110–120 km (about 1.5–2 hours) from San
Salvador de Jujuy and farther from Salta via RN 34 to Libertador General
San Martín (Ledesma area), then RP 83 (a gravel/ripio cornice road) into
the park. The main visitor hub at Aguas Negras is about 8–9 km from the
start of RP 83 after the San Lorenzo River bridge.
By car: Most
practical option. Fill up with fuel in major towns (no stations inside).
RP 83 is gravel with curves—drive carefully, respect speed limits, and
watch for wildlife. A standard vehicle is usually fine in dry
conditions; 4x4 is preferable after rain or for longer exploration.
Check road status via national highways info.
By bus: Buses reach the
Libertador General San Martín terminal. From there, a daily local bus
(typically around 08:00–08:30) heads toward San Francisco/Valle Grande
and passes through the park—ask to stop at Aguas Negras. It returns in
the late afternoon. Taxis/remises are available in Libertador or
Calilegua.
By plane: Fly into Jujuy’s airport (El Carmen area), then
continue by road (roughly 1.5+ hours to the park entrance area).
Public transport options inside are limited, so private vehicle or
arranged taxi is better for flexibility. Combine with a visit to the
Quebrada de Humahuaca or nearby Yungas sites for a broader trip.
Hours, Fees, and Registration
The park is open year-round, generally
08:00–18:00 (with slight seasonal variations for winter vs. summer
daylight). Trail entry is typically recommended or restricted to earlier
hours (often until mid-afternoon) so you can return safely. The Aguas
Negras Visitor Center is staffed daily.
Registration is mandatory for
hiking/trails at the Visitor Center. Staff provide current trail
conditions, maps, and advice. Cell signal is limited or nonexistent in
much of the park (Wi-Fi is available at the Visitor Center).
Entrance
fees (in effect since June 2026 per Administración de Parques
Nacionales):
General (foreigners): ARS 25,000/day
National
(Argentine): ARS 12,000/day
Provincial residents (Jujuy): ARS
8,000/day
Students: ARS 10,000/day
Flexipass options exist
(e.g., 3-day and 7-day passes at reduced rates). Free for retirees,
children under 6, people with disabilities, and Argentine school groups.
Present DNI (or equivalent) to verify category. Buy online via the APN
portal or on site. Confirm current rates on
argentina.gob.ar/parquesnacionales/tarifas before traveling, as they can
update.
Camping at Aguas Negras is free (agrest/wild-style) but
requires registration.
Essential Practical Tips and What to Bring
No food services or potable water inside the park. Carry all food,
snacks, and at least 2 liters of water per person per day (more for
longer hikes or camping). Pack out all trash.
Clothing and gear: Long
sleeves and pants (insects, plants, and sun), sturdy closed-toe hiking
shoes with grip, hat, sunscreen, and strong insect repellent. Layers for
temperature changes. A basic first-aid kit is recommended.
Insects
and weather: Mosquitoes and other bugs are common—repellent is
essential. In summer, prioritize rain gear and avoid difficult trails
during or after heavy rain.
Safety and rules: Do not feed wildlife or
leave food unattended. Fires only in designated spots (camping/picnic
areas). No drones, no pets on trails, no motorcycles/bikes on pedestrian
trails (RP 83 itself allows careful vehicle/bike/motorcycle use). Stay
on marked trails. Cell coverage is poor—inform someone of your plans.
Guides: Optional but highly recommended, especially for longer or
higher-difficulty trails, birding, or interpretation. Contact the park
for authorized guides.
Vehicles: Fuel up beforehand. Check tires and
condition for gravel roads.
One full day covers the main short
trails and a scenic drive. Longer stays (2–3+ days) or camping allow
deeper exploration and better wildlife/birding chances at dawn and dusk.
Main Areas and Activities
Aguas Negras (≈450 m elevation): Main
entry point with Visitor Center, free agrest camping (≈25 sites, fire
pits/asadores, tables, quinchos, toilets with solar-heated showers—water
is non-potable, no electricity or shop), parking, and trailheads. Ideal
base.
Mesada de las Colmenas (≈1,200 m): About 12–13 km along RP 83.
Viewpoint, recreation area (tables, shelter; no fires—bring a stove),
and access to some trails. Good picnic stop.
Monolith (≈1,800 m):
High point on RP 83 marking the park’s western edge, with views of the
transition to more open montane forest.
Driving RP 83: The scenic
gravel route itself is a highlight—23 km through the park showing
vegetation changes with altitude. Drive slowly and watch for animals.
Hiking trails (register first; conditions change—some higher-difficulty
ones close in summer):
Family-friendly / easier: “Nuestra Selva”
(Guaraní interpretation, ≈600 m / 1 hour), “Somos Selva” (accessible,
short), “El Pedemontano” (≈1.8 km one way, low difficulty, pedemontane
forest), “Bosque del Cielo” (short, montane forest views near the
monolith), “Seres Fantásticos” (short interpretive trail with metal
sculptures of local folklore creatures like Pombero, made from recycled
materials).
Moderate: “La Lagunita” (to a small lagoon with possible
aquatic birds and chance of yacaré), “El Tapir” (connects areas, mammal
tracks possible).
Higher difficulty (longer, more demanding; some
seasonal closures): “Tataupá,” “La Junta,” “El Negrito” (near Mesada de
las Colmenas, historical sites, montane forest).
Birdwatching is
excellent (300–400+ species reported, including colorful species like
the burgo/motmot, toucans, eagles, and Andean condor). Best at dawn
(6–8) and late afternoon. Bring binoculars. Mammals (tapir, peccary,
brocket deer, etc.) are more elusive—tracks and early/late visits help.
Jaguar sightings are rare.
Camping and Nearby Options
Aguas
Negras camping is free, basic, and scenic but requires self-sufficiency
(bring water, food, and supplies). Nearby towns (Libertador General San
Martín and Calilegua, 8–10 km away) offer hotels, hostels, restaurants,
shops, ATMs, and fuel. There is also a community-run paid camping option
in Calilegua linked to local Guaraní initiatives. Contact the park or
local tourism for current options. Nearby attractions include Río Jordán
thermal pools (outside the park), other Yungas reserves, and cultural
sites.
Prehistoric and Indigenous Occupation
The region has a long
history of human presence. Archaeological evidence includes ceramics and
polished stone axes associated with the San Francisco Tradition, linked
to early farming communities that settled in lower areas near
grasslands. From the 15th century, the Inca Empire extended control into
the territory. After Spanish conquest, the area saw successive cultural
layers. Today, Kolla (including communities with roots in Bolivia),
Guaraní, and Ocloya groups maintain presence, reflected in intercultural
trails and local knowledge of the landscape. The name “Calilegua” is
commonly linked to Aymara and often translated as “stone viewpoint” or
“mirador de piedra,” though its exact origin is uncertain.
Land
Ownership and the Path to Protection
The lands that became the park
were long associated with large agro-industrial holdings, particularly
those of Ledesma S.A. (a major sugar producer) and related companies
such as Calilegua S.A. In 1969, the state oil company YPF began
extracting petroleum from the Caimancito field (roughly 5,766 ha) in
areas that later fell inside park boundaries; this activity continued
for decades after the park’s formal creation.
In the early 1970s,
national laws required large employers to provide housing and health
access for concentrated workforces. In 1973 Ledesma was sanctioned for
non-compliance. This led to an agreement signed on 4 April 1974 between
the Province of Jujuy and the companies Ledesma S.A.A.I. and Calilegua
S.A.A.I.C. Under the deal (homologated by the national Ministry of Labor
and approved by provincial Law 3111 on 18 April 1974), the companies
ceded two large parcels—approximately 53,809 ha and 22,497 ha—as
compensation related to those labor obligations.
On 27 November 1978,
provincial Law 3586 transferred domain and jurisdiction of these
properties from Jujuy to the Argentine national state, explicitly for
the purpose of creating a national park. The national government
accepted the cession by Decree No. 1733 on 19 July 1979, which ordered
the National Parks Service to delimit the area, prepare surveys, and
advance formal incorporation into the national park system. The park was
thus established on that date as Parque Nacional Calilegua. Later
decrees (including Decree 2149/90 in 1990) designated certain sectors as
strict natural reserves. Some legal technicalities regarding full
incorporation under subsequent national park legislation have been
noted, but the area has been administered continuously as a national
park by the Administración de Parques Nacionales.
Popular accounts
often describe the creation as a straightforward “donation” by Ledesma.
More detailed historical research (including work by the park’s own
conservation staff around 2009, drawing on period newspapers) clarifies
that the land transfer originated in the 1974 compensation agreement
stemming from labor-law sanctions, after which the province ceded the
properties to the nation.
Oil Extraction Controversy and Later
Legal Developments
Oil extraction at Caimancito predated the park and
continued afterward, raising environmental and legal concerns.
Environmental groups, including Greenpeace, campaigned against ongoing
drilling inside the protected area. Activity was reduced or halted in
parts of the zone around 2015. In September 2025 the Supreme Court of
Argentina ordered the definitive cessation of oil exploitation in the
park, ruling that the activity was incompatible with the protected-area
regime. The court held the national state, the government of Jujuy, and
concessionary companies responsible for decades of continued operations
and required an environmental remediation plan to be completed by the
end of 2030. This ruling is viewed as an important precedent for
protected-area integrity in Argentina.
Conservation Role and
Character
Calilegua protects a full altitudinal gradient of Yungas
vegetation—from lower pedemontane forest (including transitions toward
Chaco elements around 200–700 m) through montane rainforest and montane
forest to high grasslands near 1,800–2,000 m and above. It is the only
national park that preserves a substantial sector of pedemontane Yungas
forest. Documented diversity includes more than 120 tree species
(notably jacarandá and tipa), about 77 fern species, roughly 120
mammals, and more than 350 bird species. Flagship or threatened species
include the jaguar (yaguareté), South American tapir, taruca (northern
huemul), puma, various wild cats, and several eagles (including the poma
or black-and-chestnut eagle). The park’s emblem is the burgo (Momotus
momota).
It is the only national park in Jujuy Province and the
largest national park in the Argentine Northwest dedicated to mountain
rainforest. Access is primarily via Provincial Route 83 off National
Route 34, near the town of Libertador General San Martín (roughly 20
minutes away). The park offers trails of varying difficulty, viewpoints,
and limited camping facilities; entry is free, though guided visits are
recommended.
Calilegua National Park is a 76,306-hectare (763 km²) protected area
in the Ledesma Department of southeastern Jujuy Province, northwestern
Argentina. It lies on the eastern slopes of the Sierras (or Serranías)
de Calilegua, part of the Sub-Andean range that forms the transition
between the high Andes and the eastern lowlands. Coordinates are roughly
23°39′S 64°47′W to around 23°55′S 64°50′W. It is the largest national
park in the Argentine Northwest and the largest protected tract of
Southern Andean Yungas (also called Tucumano-Oranense forest or mountain
rainforest) in the country. Created on 19 July 1979 by National Decree
1733, it forms part of the UNESCO Yungas Biosphere Reserve.
The
park’s core geographic identity is its steep, broken relief and full
altitudinal gradient of the Yungas. Elevations range from about 200–450
m in the eastern foothills (where some Chaco-influenced woodland
appears) to peaks exceeding 3,000 m, with Cerro Amarillo commonly listed
near 3,600–3,646 m (various sources and GPS tracks place the summit
around 3,560–3,640 m). Provincial Route 83, the main access road, climbs
through the park to the Monolito at about 1,800 m. The landscape
features abrupt slopes, deep canyons (cañadones) cut by torrential
streams, narrow valleys, and north–south trending mountain ridges.
Notable summits and ranges include Cerro Hermoso, Cerro Amarillo, Morro
Alto, and the Serranía del Socavón. The relief is young and dynamic,
shaped by Andean orogeny (Tertiary folding and thrusting), fluvial
erosion, and mass wasting; sharp ridges and near-vertical eastern faces
are typical of the higher Altos de Calilegua.
Hydrologically, the
park protects important headwaters. Numerous steep streams and rivers
drain the sierras; major collectors include the San Lorenzo and Ledesma
rivers in the south and the Río de las Piedras in the north. These
ultimately feed the Río San Francisco and then the Río Bermejo. Streams
such as Aguas Negras, Negrito, and others are prominent along the access
route and create the deep, sediment-transporting canyons visible in the
lower and mid-elevations. The dense forest cover helps regulate runoff
and reduce erosion.
Geologically, the Sierras de Calilegua belong to
the Sub-Andean structural domain (linked to the Santa Bárbara system).
They consist of folded and faulted sedimentary sequences ranging from
Paleozoic (e.g., Mesón and Santa Victoria Groups, Lipeón Formation)
through Cretaceous–Paleogene (Grupo Salta, including Yacoraite and
Mealla formations) to Tertiary synorogenic deposits. North–south
anticlinal ridges and intervening synclinal valleys dominate; transverse
structures and thrust faults reflect Andean compression. Quaternary
fluvial and colluvial deposits fill the lower valleys and the broader
San Francisco plain to the east. The steep eastern escarpments and deep
canyons are products of this tectonic uplift combined with intense
seasonal runoff.
Climate is subtropical highland/serrano with a
pronounced dry winter. Mean temperatures run about 17 °C in winter and
28 °C in summer, with absolute maxima near 40 °C in the lowlands. Annual
precipitation averages around 1,800 mm, concentrated from November to
April in often intense downpours that feed the torrents. Higher
elevations experience occasional winter frosts and snow. The orographic
effect of the eastern slopes produces the cloud-forest conditions
characteristic of the Yungas. The optimal visiting window is generally
April–November to avoid the heaviest rains and road issues on RP 83.
The park preserves a nearly complete altitudinal sequence of Yungas
environments visible along RP 83:
Foothill / pedemontane zone
(~200–550 m): denser lowland forest with transition elements toward the
Chaco; species such as tipa and jacarandá appear; some chaqueño woodland
at the lowest edges.
Montane rainforest / selva montana (roughly
550–1,200/1,800 m): the classic cloud forest with high humidity,
epiphytes, ferns, orchids, and tall canopy trees.
Upper montane
forest / bosque montano: alder (aliso), mountain pine, and related
species as conditions become cooler and somewhat drier.
High-elevation grasslands / pastizales de altura: open grassy summits
and ridges above the tree line, home to species such as the taruca
(northern Andean deer).
This gradient, combined with the rugged
topography and relatively limited human disturbance in much of the
interior, produces exceptional habitat diversity. The name “Calilegua”
is often linked to Aymara or Quechua roots suggesting “stone lookout” or
related meanings, reflecting the strategic mountain viewpoints between
the Andes and the Chaco lowlands.
In short, Calilegua’s geography is
defined by its Sub-Andean foothill position, extreme elevational range,
canyon-cut eastern slopes, headwater streams, and the continuous Yungas
forest belt it protects—making it the key national-park representation
of this biodiversity hotspot in Argentina.