The entire 809-hectare area, which also encomopasses two small man-made dam lakes, was named a Nature Preserve by the Environment and Forestry Ministry and has been under protection since 1987. Sülüklügöl attracts mainly day visitors, whose numbers are increasing steadily.

ROAD TO SÜLÜKLÜGÖL
Sülüklügöl is connected to the Mudurnu district of Bolu in the inner Black Sea region and may be reached in 2.5-3 hours by car from Istanbul. The road to the lake passes through the Dokurcun district of Sakarya. Taking the right turn after the “Sülüklügöl Nature Preserve Area” sign, the lake is reached in ten minutes over a dirt road. Depending on the pace, it takes about two hours to reach on foot. The time passes quickly, however. The architect of the lake, Tavsansuyu stream, flows alongside the path as it meanders along the green valley, enhanced by bird songs, the sound of the wind, and dizzying scents from the big birch, ash, linden and box trees.