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Photo: Stowarzyszenie Miłośników Ziemi Tarnogórskiej, CC BY-SA 4.0 via Wikimedia Commons
A 600 m-section of one of the drainage adits, reached by a shaft then toured by boat. It got its name when trout colonised it from the river it drains into. A few bats can also sometimes be seen. Tours take up to 1 hour. Booking online is advised. Tours are mostly in Polish but English and German language tours are available on certain days. Alternatively you can attend a Polish language tour by downloading the audio guide, available in six languages. Visitors must be at least 4 years old, and able to climb the 30 m-staircase to leave the tunnel. The temperature underground is 10°C. The tour begins at the Sylvester shaft, about 10 minutes walk from the nearest car park. The Silver Mine tour also includes a short boat trip, so if time is short, it is better to visit the Silver Mine.
Black Trout Adit is the longest underground tourist route in Poland travelled by boats. It's a part of one of 8 adits dug in the area to drain the workings. The Black Trout Adit is located in a park in the west of the town Tarnowskie Góry. Access is by two shafts Ewa and Sylwester. The guide puts the boats in motion and tells the stories connected with the place.
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This mined galena - lead sulphide - with a byproduct of silver. As they plumbed deeper they hit the usual problem of flooding - horse-drawn pumps just couldn't keep up. In 1784 they found silver-rich seams, which steam-powered pumps let them exploit, and later a series of adits were drilled - sideways passages into the workings so the water drained naturally. The mine closed in 1913 when the best seams were exhausted. You descend the lift with a guide and tour through the tunnels (1,700 m in all, 270 m by boat) to emerge through another shaft. The temperature underground is 10°C, and the lowest tunnel height is 103 cm. Tours take 1 hr 45 min, must be pre-booked and are occasionally available in English. There is an audio guide downloadable as an app. Outside, there is a narrow-gauge railway like those that used to criss-cross Silesia, and a collection of small locomotives. The mine and adits are listed as a .