Two million years ago, a period of glaciation modeled the landscape that today occupies the north of the province of Soria, reaching our days as one of the most spectacular natural settings in Castile and León.

The Laguna Negra and Circos Glaciares de Urbión Natural Park has the uniqueness of having been capriciously sculpted by the ice at more than one thousand seven hundred meters of altitude, causing the formation of glacial lagoons such as the Laguna Negra and important forest masses of wild pines, in addition to curious endemisms such as the armeria or the alpine daisy.

The animal kingdom in these latitudes presents a good number of curiosities such as the marbled newt or the green lizard, in addition to the more common ones such as the deer or the wild boar.