Starý Martin sightseeing tunnel.

The Ore Mountains used to be rich in metal ores. The first mentions of tin mining date back to the 10th century. There were rich deposits of tin ore in the vicinity of Krupka, which began to be mined in the 14th century. The biggest mining boom was in the 15th and 16th centuries. The Lukáš tin vein was discovered, which was 2 km long and was one of the longest tin veins in Bohemia at the time. The Starý Martin tunnel was used to extract it,…