The Blue Lake near Imotski, Croatia. Lying in a deep sinkhole, the karst lake in southern Croatia ch
The Blue Lake near Imotski, Croatia. Lying in a deep sinkhole, the karst lake in southern Croatia changed into a rare blue color because of heavy rains and sudden flow of underground water. (Xinhua/Ivo Cagalj). -- source link
#imotski#croatia#mountain#mountains#sinkhole#sinkholes#karst lake#karst lakes#underground water#heavy rain#heavy rains#nature