The rock formation “Slona” (the “Elephant) is located about 4 km southeast of Devin and could be seen from the Devin-Smolyan main road at the entrance of Nastan neighborhood. It is on the north side of the road on the side of Vacha river just before it flows into Shirokolashka river. It has the shape of an elephant, formed for millennia under the natural forces. Gazing into the rock one could distinguish curves and shapes reminding of an elephant body, head, feet and trunk.
Some scientist share the opinion that the emergence of this rock formation relates to the destruction of a cave under the impacts or the running water or an earthquake. Besides the main road against the “Elephant’ there is a car park with, a rest place and information boards.