Red and Blue Lake

Red Lake and Blue Lake are two of the most famous natural symbols of the Imotski region and among the most valuable karst phenomena in Croatia.

Located in the immediate vicinity of the town of Imotski, they attract visitors with their unique beauty and fascinating geological history. Both lakes were formed by the collapse of underground cavities in the limestone karst landscape, but they differ in appearance, depth, and accessibility.

Red Lake is recognizable by its steep reddish cliffs, from which it received its name. It is considered one of the deepest water-filled karst sinkholes in Europe. According to local stories, no one can throw a stone into the lake because the air currents push the stone toward the surrounding cliffs. Its depth has been the subject of numerous scientific studies and speleodiving expeditions. In 2017, French cave diver Frédéric Swierczynski became the first person in history to dive to the bottom of the lake, marking an important moment in the exploration of this natural phenomenon.

Due to its extremely steep cliffs, Red Lake can only be viewed from a nearby viewpoint, which further emphasizes its mystery and uniqueness. The lake is also connected with the famous legend of Gavan’s Palaces. According to the legend, a magnificent palace once stood on this site but sank into the ground because of Gavan’s cruelty. Even today, stone remains can be seen on the edge of Red Lake, which local tradition associates with the remains of the legendary Gavan’s palace.

Blue Lake is located almost in the very center of Imotski, beneath the Topana Fortress, and has been protected as a geomorphological natural monument since 1964. Unlike Red Lake, Blue Lake can be reached by a maintained pathway that allows visitors to descend almost all the way to the water. The water level changes significantly throughout the year, and during dry periods the lake can completely dry out.

When this happens, a traditional football match is played on its dry lakebed, a unique event that attracts considerable attention. During the summer, when the water level is high enough, Blue Lake becomes a favorite place for swimming and relaxation among both locals and tourists.

Both lakes are part of the Biokovo–Imotski Lakes UNESCO Global Geopark, confirming their exceptional geological and natural value. Thanks to their beauty, rich history, legends, and unique natural characteristics, Red Lake and Blue Lake are must-see attractions for anyone visiting Imotski and the Dalmatian hinterland.