Due to its almost perfectly round shape and shifting shades of blue, the spring is globally recognized as the "Eye of the Adriatic" or the "Eye of Dalmatia," appearing from the air like a massive, mystical blue eye framed by rugged karst. The water emerges from a vertical underwater cave that plunges into unexplored depths; divers have reached 115 meters, but the true bottom remains a mystery. The water is crystal clear, drinkable, and extremely cold, with a temperature between 7 and 9 degrees Celsius.

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The area around the spring hides important monuments of early Croatian history, including the remains of the 9th-century Old Croatian Church of St. Salvation with its preserved pre-Romanesque bell tower, a vast necropolis with over 1,100 graves and hundreds of stone stećci, and the medieval Glavaš fortress. A wooden platform allows for safe viewing and photography of the spring, and Glavaš also serves as a starting point for hikers heading to Sinjal, the highest peak in Croatia.