Golemia buk (The big beech) is a natural landmark along the route between “Bulgarka” hut and Krastets railway station. It is located in the area “Maglizhka Polyana” at 1100 m asl. This venerable beech tree is over 500 years old, with a height of 32 meters and a diameter of 3.7 meters, occupying an area of 0.1 ha. It grows on brown forest soil. The tree was declared a natural landmark on March 13, 1950.