Rio Celeste Hike

Come and explore why the color of the river is blue. Rio Celeste is a must see destination surrounded by lush rainforest

Rio Celeste hike, this tour begins when you are picked up in your hotel, we will travel to Rio Celeste, located in the Tenorio Volcano National Park. Rio Celeste is famous for its blue waters, there is a legend that says “That the waters of the Rio Celeste have that color because, when God finished painting the sky, he washed the brushes in the water of this river”
Once there, you will hike to rio celeste waterfall, to get to the foot of the waterfall you have to go down 250 steps, here, you will find a viewing platform where you can take pictures.
The tour continues through the forest, where you will be able to observe monkeys, snakes, insects, lizards, sloths and different species of birds. The trail is uneven, irregular, uphill and slippery(depends on the season). You will visit a lagoon, where sometimes is possible to observe a tapir swimming across, you will learn about the interesting phenomenon that makes that this river turn blue. Finally you will visit los “Teñideros” (here is where the river changes its color). Afterwards, we will make our way back along the same trail. A delicious lunch will be served after the tour.
Back to hotel

Due to recent regulations from MINAET (Ministry of the Environment) it is not possible to swim at Tenorio Volcano National Park.

Why the River is blue?

To understand the color of the river, we must know that two completely transparent rivers, the Quebrada Agria River and the Buena Vista, converge to form the Rio Celeste (Blue River). It is precisely from the point of union of both that the waters cease to be transparent and become blue in the following 14 kilometers downstream. For that reason, that point is known as El Teñidero.

Scientists observed that in the river was a layer of a whitish substance that covered all the stones of the bottom of the Rio Celeste. They went to the tributaries and looked for the presence of the same substance and found it in greater quantity in the Buena Vista River and in a small amount, almost insignificant, in the Quebrada Agria.

When analyzing the substance by electron microscopy in the laboratories, they discovered that it is a type of mineral called aluminosilicates. It is composed of aluminum, silicon, and oxygen, and being suspended in the water, is responsible for reflecting the Sun’s light so that the flow looks blue.

The answer lies in the particle size of these aluminosilicates because the size determines how they reflect sunlight. In the Buena Vista River, the particles have a size of 184 nanometers (nm). On the Celeste River itself, they are much larger, at 566 nm

What’s included: transport, tourist guide, park fee, hike and lunch
What to bring: closed shoes, rain gear, repellent, camera, sunblock

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