The 'Gorgs' of the Sant Aniol river are created by the erosion of limestone cliffs over thousands of years.
Gorg Blau is often distinguished from the neighboring Gorg Fosc by its notably more translucent, turquoise water.
The Alta Garrotxa area is a protected Space of Natural Interest, famous for its dramatic limestone ridges and deep river valleys.
The hike to the pool passes near the historic 11th-century Romanesque chapel of Sant Aniol d’Aguja.
During heavy rainfall, the water levels in these limestone gorges can rise rapidly, changing the accessibility of the pools.
Gorg Blau is a deep, turquoise-colored natural pool located within the Riera de Sant Aniol, set in the volcanic region of Alta Garrotxa near Sadernes, Spain. It is part of a series of freshwater swimming holes carved into limestone rock formations. The site is accessible via a hiking trail that follows the gorge, featuring diverse riparian vegetation and narrow canyons. The water source is primarily snowmelt and rainfall, leading to cold temperatures year-round. It is a critical habitat for native Mediterranean freshwater biodiversity. The location is situated within a protected natural area requiring careful navigation of the terrain.
The elevated rock ledge overlooking the pool offers the best perspective to capture the color contrast against the grey limestone.
Wear sturdy water shoes with strong grip to navigate the slippery, uneven riverbed rocks.
Bring a waterproof bag for electronics as the terrain involves narrow, rocky paths along the water.
Pack out all trash, as this is a remote natural area with no waste collection facilities.
Attempting the hike in high summer without adequate water supplies or during/after heavy rain due to flash flood risks.
Access may be restricted during periods of extreme drought or high fire risk; check local Alta Garrotxa Consortium alerts before departure.
Practice Leave No Trace principles; maintain silence to respect local wildlife; do not use soaps or detergents in the water.
