In this guide
Vallemí is about its limestone caves: Santa Caverna, Caverna 54, the 14 de Julio cave and the Kamba Hópo rock, reached by boat on the Paraguay River. All are visited only with a registered local guide, and the rest of the day goes on the Vallemí lookout, fishing and the beaches of the Apa and Paraguay rivers (Última Hora, 2024 (opens in a new tab); InfoNegocios, 2024 (opens in a new tab)). The town is in San Lázaro district, in the north of Concepción department.
First: caves need a guide
Santa Caverna, Caverna 54 and Kamba Hópo are protected wild areas under Law 4577/12, on land owned by the state cement company INC; you can only enter with registered local guides, and the usual meeting point is Tres Cerros in Vallemí (Última Hora, 2024 (opens in a new tab)). Guides certified by Senatur, the national tourism office, work the area (La Nación, 2026 (opens in a new tab)).
- Book your guide before leaving Asunción or Concepción and fix the day and time.
- Bring a helmet and torch, comfortable clothes and shoes, water, sunscreen and any medication (InfoNegocios, 2024 (opens in a new tab)).
The caves, one by one
Santa Caverna. The best known, in the Tres Cerros area, discovered on 13 May 2004. Its stalagmite "La Santa" resembles the Virgin and draws visitors out of devotion (ABC Color, 2021 (opens in a new tab); InfoNegocios, 2024 (opens in a new tab)). You go down about 6 metres by ladders and crawl in places (Última Hora, 2024 (opens in a new tab)); the visit inside takes about 2 hours. Not for pregnant visitors, people with claustrophobia or obesity, or heavy smokers (ABC Color, 2021 (opens in a new tab)). No flash photography.
Caverna 54. Natural light gets in, fig-tree (guapo'y) roots more than 20 metres long hang from the surface, and you can rappel; inside it stays cool, around 25 °C (Última Hora, 2024 (opens in a new tab); ABC Color, 2021 (opens in a new tab)). About 40 minutes. The best one for natural-light photos.
14 de Julio cave. In the Tres Cerros community, the most visited and the easiest to enter, fine for children and older people (ABC Color, 2021 (opens in a new tab); InfoNegocios, 2024 (opens in a new tab)). About 40 minutes.
Kamba Hópo. A rock rising more than 40 metres above the Paraguay River in Cerro Vallemí, reachable only by boat; rappelling is possible too (Última Hora, 2024 (opens in a new tab); La Nación, 2026 (opens in a new tab)). The boat ride from the port takes about an hour round trip (InfoNegocios, 2024 (opens in a new tab)), and it shows best when the river is low (ABC Color, 2021 (opens in a new tab)).
With one day: Santa Caverna in the morning, Caverna 54 or 14 de Julio after lunch, and the boat to Kamba Hópo late afternoon.
The lookout and the river
- Vallemí lookout. The must-stop for views of the river, the forest and the INC cement works (Última Hora, 2024 (opens in a new tab)); agency packages include it (InfoNegocios, 2024 (opens in a new tab)). Go at sunset.
- Fishing and river trips. Surubí, dorado and pacú are the local sport-fishing species, and there are beaches on the Apa and Paraguay rivers (Última Hora, 2024 (opens in a new tab)). Guides also offer hiking and birdwatching (same source).
- The cement works. INC has operated in Vallemí for more than 77 years, surrounded by over 20 lime companies (La Nación, 2026 (opens in a new tab)). It's the town's backdrop; see it from the lookout.
A side trip to San Lázaro
About 14 km north is the town of San Lázaro, where the Apa River meets the Paraguay, facing Brazil (Wikipedia (opens in a new tab)). Its patron-saint festival is on 17 December, with rodeo-style riding for women and men (same source).
When to go
Heavy rain falls from November to January, the driest months are June to September, and summer reaches about 40 °C (Wikipedia (opens in a new tab)). Some cave sections flood in the rainy season and close (La Nación, 2026 (opens in a new tab)), so winter is the safest bet. Tourism officials suggest Easter week (same source).
Getting there
From Asunción it's about 590 km and some 9 hours by car, with three tolls; the road to Vallemí is now paved (Última Hora, 2024 (opens in a new tab)). From Concepción, paved Route PY22 runs through Vallemí to San Lázaro, and several bus companies cover it (ABC Color, 2021 (opens in a new tab)). It is not a same-day return trip: for a plan with overnight stops, and the plane or boat options, see Vallemí overnight.
FAQ
Can you visit the Vallemí caves without a guide?
No. They are protected wild areas on INC land and you may only enter with registered local guides; the usual meeting point is Tres Cerros.
Which Vallemí cave is easiest?
The 14 de Julio cave in Tres Cerros, which suits children and older visitors. Santa Caverna involves ladders and crawling.
How do you get to Kamba Hópo?
Only by boat on the Paraguay River; the trip from the port takes about an hour round trip.
How far is Vallemí from Asunción?
About 590 km, some 9 hours by car on paved roads, according to Última Hora (2024).
