Cínový důl / Tin mine [Exploration]

A vast underground labyrinth where the mining dates back to the 14th century. Tunnels closer to the entrance were made wider in the 17th and 18th centuries, but the further you go inside, the tunnels get more and more narrow. In the oldest, furthest shafts, we had to crawl on all four. That's where we found that emerald-green underground pool. My camera looked like a mudball when I got out of there, but the experience was well worth it. 

Tunnels near the entrance are wide enough to allow you to walk upright.

Then the shaft goes deeper into the mountain.

Some tunnels caved in sometime in the last five hundred years.

Tiny underground pond

And a second one, slightly larger.

Time to turn around...