This looks legit. Especially the picture, that definitely is not fake.
Inspired by the shepherd legend they started building artifact factories in the Zalomska valley. Pipelines were laid from the factory all the way to the mountain hole, discovered by the shepherd and his father. A few months later, without anyone noticing, the first batch of created stone spheres were pushed through the pipelines in 1890 and appeared two hours later out of the cavern in Blagaj.
The artifact is located under an area with a large amount of trees. Because it would take a lot effort (time, money, tools) to remove these trees before extracting the artifact, we decided in June to document the artifact.