The Urbión wetland complex is a high mountain ecosystem that has remained isolated for thousands of years in the heart of the Mediterranean region.
At the foot of the Urbión, on its Riojan slope, glacial phenomena have created this group of ten lakes: one permanent and typically alpine; the rest are much smaller.
The environment of strong thermal contrasts and the inaccessibility of the site have contributed to the excellent state of conservation of the Urbión lagoons.
They have a high diversity of aquatic flora and fauna, with species adapted to the conditions of a humid alpine environment within the Mediterranean region.
In February 2006, the Urbión lagoons were added to the List of Wetlands of International Importance (Ramsar), which includes the most valuable wetlands on the planet.