The cave of the swallows...

The cave of the swallows has been created by long-term erosion due to water. Its shape is roughly conical and its depth exceeds 500 meters.The entrance of the cave is elliptical in shape, with diameters of about 50 to 60 feet. The dimensions of the chamber of the cave gradually increase until it eventually ends in a room with dimensions of 300 to 130 meters. The dimensions of the cave make it a favorite destination for many tourists in the region, especially for fans of extreme sports. The depth is large enough to allow the execution of base jumping, ie jumping with parachute from entering the manhole. Equally popular is the descent rope and climbing the vertical walls of the cave, which lasts just over an hour. Finally, there are many who visit the cave of the swallows to enjoy the spectacular flights of birds that live there. Every morning, many flocks of swallows fly in circles inside the chamber, gradually ascending until they got over it. Each evening, however, the birds flying free fall with closed wings from the entrance of the cave and when they reach the height of the nest to open their wings to stay there. The following pictures and videos are impressive! perierga.gr