About a kilometer from the village Stoilovo in Strandzha mountain, can be seen a small but extremely beautiful waterfall called “Dokuzak”.
It is located on the river Aydere, which springs from nine karst springs – hence the name of the waterfall, which translated from Turkish means nine springs.
It is about 5 meters high, and its waters spill in numerous streams on strongly relief rocks. Around the main stream there are several smaller streams that flow on moss-covered rocks.
In its area is the most compact of the scattered in this area deposits of endangered Crimski tea.
The territory of the waterfall has been declared a protected area.