One of our favourite Tohoku destinations and one of the most beautiful places on the planet! The colours of Goshiki-numa 五色沼 (Five-coloured Lakes) are almost too beautiful to be real. The only way to be sure is to come and visit for yourself!
Goshiki-numa is a cluster of five volcanic lakes situated at the foot of Mount Bandai in the center of the lake district of Bandai-kōgen, Kitashiobara, in Fukushima prefecture.
Goshiki-numa formed when Mount Bandai erupted on July 15, 1888, destroying dozens of villages and killing approximately 500 people while creating hundreds of lakes and tarns.
The eruption completely rearranged the landscape, creating the Bandai-kōgen plateau and damming local rivers. The eruption imparted mineral deposits to the Five Colored Lakes giving each of them their own delicate color, ranging from reddish green to cobalt blue. The colors of each lake mysteriously fluctuate throughout the year with the weather. Since the eruption, Goshiki-numa has become a popular tourist destination.
More info and access http://news.gogotohoku.jp/2017/06/27/a-beautiful-mistake-goshikinuma/
An approximately four-kilometer walking path from Lake Bishamon, the largest of the five lakes, to Lake Hibara affords people a view of all five lakes.
From Tokyo (by train):
Take the JR Tohoku Shikansen to Koriyama Station (郡山, roughly 1.5 hrs from Tokyo). From here, change to a local rapid service to Inawashiro Station (猪苗代) on the JR Banetsu West line (or 磐越西線 Banestu Saisen in Japanese). There are local buses which run from Inawashiro station to the entrance to Goshikinuma (五色沼入口 Goshikinuma-iriguchi). Buses run every pretty much once an hour, and the trip will only take 30 mins (and cost you around 750 yen). Here is a bus timetable (Japanese) for your reference. Please note that the bus is not covered by the JR Pass.
From Sendai (by train):
Take the JR Tohoku Shinkansen to Koriyama Station (郡山) (roughly 40 mins from Sendai). Follow the above instructions!