Deniz Gölü is the deeptest glacial lake in Turkey with depth of . Also, it is the biggest lake in terms of surface area in the Kaçkar Mountains with 750 m². Diameter of the lake is approximately and has an altitude of . Surface of the lake is covered with ice for 10 months and it starts to melt between 17th and 25th of July.. There is one walking route to the lake from Yaylalar village of Yusufeli. It takes between 5 and 6 hours to go to the Deniz Gölü.