Entrance Tunneling Adit Old Mining Break room Timbering Horse Stable Blue Lake Barbara Airplane Model Museum Barbara Adit Incline Ramp Shaft tower Festival Room

Upper floor: Blue lake

The images shows the Blue Lake. The water surface area is about 300 m². The depth of the lake is about 3 m. A part of the bigger lake is located 14 m below this small lake. The water temperature is about 8° C.