Photo and caption by Mozhdeh Bagheri
Okama Lake lies in a crater formed by a volcanic eruption located in the most active volcano in northern Honshu. It also known as the "Five Color Pond” because it changes color depending on the weather (the blue color of this pond is natural). This photo was taken in October 2012 in the Mount Zao.
Location: Mount Zao, Yamagata Prefecture, Japan.