Explore OneK · Southern Costa Rica
From immersive forest walks and birdwatching to nights in the forest and nocturnal exploration, OneK offers experiences designed to reveal the rainforest with depth, wonder, and purpose.
Why explore OneK
OneK combines the atmosphere of a remote rainforest sanctuary with the depth of a field experience—making each activity feel more meaningful, more sensory, and more connected to place.
This region is among the most biodiverse places on Earth, home to one of the richest concentrations of wildlife in Costa Rica. At OneK, exploration is not reduced to a checklist. It unfolds through sound, movement, texture, and close attention to the living forest.
Whether you come for birdwatching, family discovery, nature education, or simply the experience of being immersed in primary rainforest, each visit invites a deeper form of connection with the natural world.
Featured activities
Four distinct ways to experience the rainforest: from guided forest walks and quiet birdwatching to the hidden world that comes alive after dark.
Trek beneath dense canopy where shifting light, flowing streams, wildlife tracks, and layered forest sounds turn every walk into a living field experience. Along the way, visitors may encounter signs of peccary movement, brocket deer, or even the hidden passage of a puma.
Inquire About VisitsDay activity
A paradise for bird lovers, with rewarding opportunities for quiet observation, photography, and repeated encounters across forest and edge habitats.
Immersion
Wake to bird choruses, move through forest trails by day, and end the evening beneath stars and insect song in the heart of the reserve.
Nocturnal world
As darkness falls, frogs, insects, and other nocturnal species begin to emerge, revealing a different rainforest entirely.
Stay in the forest
Tucked deep within the tropical rainforest, the OneK camp feels far removed from the ordinary. Dawn begins with birdsong and filtered light; the day unfolds through streams, trails, and waterfall mist; and night brings stars, insects, and a powerful sense of stillness.
For many visitors, this is what makes OneK different: the reserve is not simply visited—it is inhabited, listened to, and felt. The experience of staying close to the forest changes the pace of attention and reveals a deeper, more atmospheric side of travel.
It is a place to explore, but also to rest, notice, and reconnect.
Wildlife encounters
Nature education
The “Rainforest Classroom” is OneK’s signature nature education program. Rather than separating learning from experience, it places students and visitors inside the landscape itself—where forest structure, wildlife behavior, sound, weather, and observation all become part of the lesson.
Through guided exploration and direct encounters, children and adults build curiosity, attention, and respect for the living world. It is not only educational; it is immersive, memorable, and emotionally resonant.
Beyond OneK
From whale-filled coastlines to misty cloud forests, discover the wider region that surrounds OneK.
This region is an important breeding and nursery ground for humpback whales. Boat journeys through mangroves and out into open water can reveal mothers, calves, and dramatic breaches.
Travel by vehicle through surrounding habitats in search of monkeys, scarlet macaws, and other charismatic wildlife that make this part of Costa Rica especially dynamic.
Cloud forest trips reveal a different ecosystem entirely, with cooler air, endemic species, and the possibility of encountering one of Costa Rica’s most iconic birds: the quetzal.