Both lakes are named after the colour of the water; the red comes from the colour of the surrounding red rocks and the blue comes simply from the water colour (deep blue).
These are two sinkhole lakes but there is a legend about the origin of these lakes. Near Imotski, there used to live a very rich man by the name of Gavan. He was very wealthy, however very evil as well. His door was always closed to the poor and he would always chase them away from his palace. Once, an angel came to his palace, disguised as a poor man, looking for some food but all he got was hostility and a kick from Gavan's wife. Suddenly, the ground started shaking and all the palace, together with Gavin and his family, perished into a profound which filled with water.
The Red lake is one of the deepest lakes in Europe; it is interesting that even today its depth has not been fully discovered yet. Until now, they have only discovered a cave of 280 m below the surface level. The lake has almost vertical cliff sides, so the lake is reachable only to those with the appropriate equipment: members of hiking and speleological societies. So, the lake can only be seen from a viewpoint by the road. You can also try to throw a stone into the lake; it's a common belief that it cannot be done. The scientist claim that the circulation above the lake is so strong that the stones go back among the rocks.
Unlike the Red lake, which is abundant in water, the Blue lake dries out from time to time. When this happens, people usually play football at the bottom of the lake. During summer, it is a place where you can take a swim. The Blue lake can be reached by a walking path.
Since the lakes are practically situated next to the city of Imotski, you might as well take a tour of the city. Imotski is an old city dating back to the 10th century. Today it has a population of more than 10 000 people. The old town is built in carved stone which is the reason why some people consider it one of the most beautiful small Dalmatian towns. Above the town rises an old Croatian fortress, Topana. Today, it is a viewpoint and many events are held there during summer months.
How to get to Imotski
Imotski is situated close to the Bosnian border, 88 km from Split following the highway or 1 hour and 20 minutes. If you are going by bus, there are plenty of daily departures from Split.