the 8.8 km² hrauneyjalon reservoir in iceland, which is formed by a dam

f26 road iceland highlands sprengisandur hydropower hydro landsvirkjun power station generation hrauneyjafoss þjrsa þjórsá area volcano volcanic water lake reservoir dam hekla tungnaá tungnaa river sigalda hydroelectric landscape winter nature cold glacier outdoors view rock ice clouds horizon cloud ski range scene sky snow white mountain frozen blue beauty