Natural salt lake carved into the peninsula, "hill" is a natural phenomenon resulting impact of tide. There is and other theories about the origin of this lake and that is that the lake formed by the impact meteor. Also there are a couple legends.
-awakened to the great dragon (of which the name "dragon lake")
-or that it fell UFO ...
The lake is elliptical in shape (150x70) area of approximately 5000m square, the depth of about 15 meters. Many customers like to come to the lake and jump from a height of 2 meters and up to 30 meters (those little more extreme).