Wikitravel

I wrote my comment on this URL.

http://wikitravel.org/en/Gunma#See

I wrote a Gunma's good spot to "see".

You can visit Mt. Shirane except winter. On the top of Mt. Shirane, there are a lake called Yugama. Yugama is emerald green, but it seems to be changing at the four seasons. The pH of the lake is about 1.0, so it is called a lake where the acidity is the highest in the world. This is a famous place as a sightseeing spot.