Colourful lakelets (Polish "Kolorowe Jeziorka") is the name of three (sometimes four) artificial ponds formed in place of former mines at the slope of Wielka Kopa mountain (871 m) in Rudawy Janowickie, range in Sudetes Mountains, Poland. The biggest one and the oldest (1785) was named Hoffnung Grube and now hosts the Purple lakelet.
Colourful lakelets (Polish "Kolorowe Jeziorka") is the name of three (sometimes four) artificial ponds formed in place of former mines at the slope of Wielka Kopa mountain (871 m) in Rudawy Janowickie, range in Sudetes Mountains, Poland. The biggest one and the oldest (1785) was named Hoffnung Grube and now hosts the Purple lakelet.
Source: Wikipedia "Colourful lakelets" · CC BY-SA 4.0
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