This tour is stage three of the trans Rhodopean Trail. It starts from the shores of Shiroka Polyana Dam and leads to the village of Zmeica in the Southern Rhodopes. The trail passes by the Information and Protection Centre of the Otter located in the valley of Karadja Dere Rivere. Near the end of the trail, on the main road Dospat - Devin there is and ancient bridge which is a good example of the local medieval architecture. Technical difficulty level is low to medium at some sections due to the stony road.