Zimnik quarry (near Strzegom)
Zimnik is a flooded granite quarry near Strzegom in Lower Silesia, up to 28 m deep. Divezone describes ledges like stairs, vertical walls and a sunken car, and notes the lake can be circled in one dive of about 45 minutes. Visibility is 4-9 m, and below 16 m a torch is needed. A Polish listing says the site is private land and a 10 zł fee is put into a box beside the shop before the gate is opened.
Tiefe: 0–28 m