It looks like just the surface of a regular wall, but that’s very far from the truth. It’s actually a close-up photo of one of the walls in the Wieliczka mine in Poland, which means what you’re looking at is made entirely out of salt. It’s so unique and amazing and you can imagine how the area feels to touch – probably something like ice, which is what it looks very similar too, just not that cold. photofree exgif stockphoto