It 's called the Shravan Plateau .

Sarıalan Yaylası Camping Area is located in Bolu, one of the greenest cities in Turkey. Camping is possible in both tents and caravans on the Sarıalan Plateau. Although it is poor in terms of facilities, it stands out for its nature and scenery.
Since the Sarıalan Plateau, one of the places to visit in Bolu, is very cool in summer and winter, it would be good to have something thick with you (polar, jacket, etc.). There are no camping facilities at the campground. So it's good to be prepared when you go to the campsite. And in the winter, there can be a lot of snow and cold. So if you don't have any previous winter camp experience, it's not advisable to go alone. It's not one of the best places to visit in Bolu in winter.