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Lost River Hot Springs Adventure

Costa Rica Tour Kiosk

Quick Details

Shared Tour Minimum: 4
RP Full Pass
RP Full Pass + Canyoning
RP Full Pass + WW Tubing
RP Full Pass + WW Tubing + Canyoning

Thermal Canyon & Springs

The centerpiece of the 600-acre private reserve is the Rio Perdido, which means lost river. This 150-foot, thermo-mineral gorge that draws energy from deep magma flows, will cast its spell on anyone that descends to its magical waters for the first time. It’s a completely natural and inspiring setting, unlike any other place on the planet.

Along the riverbed, there are eight registered springs, from which over 4,000 gallons of hot water emanate every minute. At these points, the water is a bit too hot for more than a dip of the foot. But as a result of the spring water mixing with the river’s flow, we have been blessed with dozens of soothing pools of varying temperatures that are absolutely perfect for prolonged bathing. And, just upstream from the springs zone, you can actually swim in cool water. In this unique area, you can literally jump between hot and cold mineral water.

Along the Rio Perdido grows a beautiful forest of Ron Ron, Ojoche, Nispero, Jobo, Ceibo, and Espavel trees that boast canopy heights upwards of 160 feet. This scene makes for a strong contrast with the dwarf forest that grows outside and above the canyon. So there are two very distinct ecosystems occurring adjacent to each other. The canyons behave like long oases, cutting through the arid forest. This has given way to a very interesting mix of local fauna. You are guaranteed to see all sorts of birds, mammals, reptiles, amphibians, and insects.

The trail circuit and a series of bridges, including a 200ft hanging bridge that connects the hotel to the reserve, allow visitors with a sense of exploration to tailor their own unique adventure, each day. There are dozens of destinations within the reserve. You can opt for a short and easy walk to the Yurro Waterfall or you can challenge yourself with a hike up to Las Tumbas. Read more about the myriad of options in our section on hiking.


  • Access to the thermal river, the natural river pools, and the hot springs
  • Use of the mineral pools, each with distinct water temperature and therapeutic water jets
  • Hiking (without a guide), miles of diverse trail circuits, bridges, and panoramic lookouts
  • Volcanic mud body-painting
  • Use of towels and lockers
  • Access to the changing areas and showers
  • Lost River signature lunch

Hiking Trails

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