The Río Celeste becomes blue at a point where two
clear-water tributaries merge, at a point called El Teñidor. El Teñidor
translates to “The Dyer” in English. Scientists have come up with numerous
theories as to where the Río Celeste gets its color. Most recently
they have discovered that rocks at the bottom of the river have a mineral
coating that includes silicon, oxygen, and aluminum. It is the size of these
minerals, as well as the reflection of the sunlight, that gives the water its
Along the trail you can also see thermal
hot springs and a blue lagoon. Visitors must stay on the trail so
as not to disrupt any part of the forest’s ecosystem.
The Río Celeste can be accessed from either
Gautuso or Bijagua. Gautuso is about an hour from La Fortuna. It takes closer
to an hour and 45 minutes to reach Bijagua. Accessing the park from Bijagua is
somewhat easier, and the main road in Bijagua has been recently upgraded.