Melnik Rock Pyramids were declared natural landmark in 1960 and cover an area of around 1165, 5 ha. They are beautiful sand formations, with specific vertical walls with grass and deciduous trees on their tops. They can reach a height of around 100 m., and besides their pyramidal shape they can also look like mushrooms, cones, needles and more. The Pyramids are one of the most visited rock pyramids on the territory of Bulgaria.