Imotski – 300-meter-deep collapse doline Blue Lake

Imotski is a small town situated on the northern side of Biokovo massif, Dalmatian Hinterland, Croatia. The town is located close to the border with Bosnia-Herzegovina, by the towns of Posušje and Grude. The nearest coastal town is Makarska.

Imotski is known for its medieval fortress on the rocks of Blue Lake. Another phenomenon is the Red Lake which looks like an eye in the scenery. Both lakes are said to be connected with underground channels to the Adriatic Sea. The town was first mentioned as Imotski in the 10th century. It was held by the Turks from the fall of Bosnia in 1492 until 1717 when it was captured by the Venetians.

The Topana Fortress fell into disrepair after it was abandoned by the Austrians, who had taken it over from the Venetians. It was used as a quarry by the residents of the growing town of Imotski. The remains are preserved today. At the entrance is the Church of the Holy Madonna of the Angels, built in 1718 after the withdrawal of the Turks. Due to its exposed location, the fortress offers a great view over the city and the Imotsko Polje. Topana lies at the top of a nearly 300-meter-deep collapse sinkhole filled by the Blue Lake. A comfortable path leads down into the karst basin to a viewing platform right on the lake.

Kamp Galeb - Omis and Split on the way to South