Colorful Lakes near Wiesciszowice, Poland

Not exactly volcanic landscape (the lakes are remains of XVIII-th century pyrite mines called "Hope", "New Luck" and "Gustav Grube"), but this is a very special place in Poland. They lie on the northern slope of Wielka Kopa mountain (871 m). Yellow Pond (the youngest lake). Purple Lake (the largest one with high saturation of copper and iron, dark red color of water). Azure Lake (light blue color of water). Green Pond (Black Lake, the smallest one, during dry weather often disappears completely).