The water is an impossible blue, almost artificial, as if someone had poured paint into the river. Yet the color of the Río Celeste is completely natural: it comes from the meeting of two watercourses that flow down the slopes of the Volcán Tenorio, where volcanic minerals — particularly aluminum silicate — mix and create a chemical reaction that disperses light in such a way as to return that surreal turquoise hue that has made this place famous all over the world.
The Volcán Tenorio is located in the Bijagua region, in the northwest of Costa Rica, about four hours by car from San José. It is a stratovolcano considered dormant, with an altitude exceeding 1,916 meters above sea level. Surrounding the volcano is the Parque Nacional Volcán Tenorio, established in 1995, which protects one of the best-preserved rainforests and cloud forests in all of Central America. Here, biodiversity is extraordinary: tapirs, toucans, quetzals, and an impressive number of amphibian species inhabit this humid and dense ecosystem, where clouds rest on the treetops for much of the day.
The path to the Río Celeste
The main trail of the park is a loop of about 9 kilometers that starts from the main entrance and first leads to the waterfall of the Río Celeste — about 30 meters high, where the turquoise water plunges into a pool surrounded by tropical vegetation — and then continues to the Hot Springs, the boiling springs where you can see steam rising from the bubbling water, and finally to the point called Teñidero, the exact place where the two rivers meet and the water changes color before your eyes. This moment is perhaps the most surprising of the entire visit: on one side the water is clear, on the other it immediately becomes turquoise, as if there were an invisible line between two worlds.
The trail is well marked and can be walked in about 3-4 hours at a leisurely pace. The ground is often muddy, especially during the rainy season, and in certain sections, you cross wooden bridges suspended over small streams. The exposed roots and slippery ground require caution, but it is not a technically difficult path. Along the way, you pass through a dense misty forest, where rays of light filter through the tree ferns and moss covers every available surface.
How to organize the visit
The park opens at 8:00 in the morning and the entrance fee is about 18 US dollars for foreign tourists. It is highly recommended to arrive at opening time, not only to avoid the crowd that builds up during the central hours of the day, but also because early in the morning is the best time to spot wildlife along the trail. Local guides are available at the entrance and a guided tour can make a difference in recognizing animals camouflaged in the vegetation.
To reach the park from Bijagua, the nearest village, you travel a dirt road of about 10 kilometers that requires a vehicle with good ground clearance, especially during the rainy season. Many accommodations in the area offer organized transfers. The dry season, between December and April, ensures less muddy trails, but the park remains fascinating all year round: in the wet seasons the forest is greener and the river more turbulent.
Where to stay in the area
Bijagua is a small rural center that has developed a decent tourist offer in recent years, with lodges immersed in nature that allow you to hear the song of the night frogs and wake up to the call of toucans. Many establishments are family-run and offer breakfasts with local fruits such as passion fruit and cas. Staying at least two nights in the area allows you to visit the park at a leisurely pace and dedicate a day to the nearby Caño Negro Lake, a protected wetland about an hour away, ideal for birdwatching.
The most important thing to remember is that swimming in the Río Celeste is prohibited within the park, to protect the aquatic ecosystem. It is not a symbolic rule: park rangers enforce it carefully. Bringing enough water, waterproof hiking shoes, and a light raincoat is essential. The Volcán Tenorio is not a place to improvise: you prepare, and then let the forest do the rest.
