Here are some pics of a recently restored salt mine. Bare in mind that light in a mine isn't good and pics were taken with a modest point and shoot. Going down to the main hallway: The main hallway, you can actually cross under the whole hill and get from one side of the city to the other All the walls look like this: Stairway to the main chamber: Top of the main chamber and looking down: Chamber to the side of the main one, with a small lake on the floor: Chamber description: Miniature golf course, ferris wheel, bowling alley, amphitheater: Looking up from the floor of the main chamber: Looking up from the lake, towards one sealed off entrance: You can see the elevator here, again from the lake: Extraction machine: The echo chamber (it was actually a ledge above the chamber, all you could see is pitch black and the echo gave you chills, I could count 5-6 reverbs): I hope to visit again, with a better camera or a more organized schedule