Hike around Lake Onuma at Mount Akagi
In May, I went to Maebashi City in Gunma Prefecture, north of Tokyo, in order to visit Mount Akagi (赤城山). There is no actual peak named “Mount Akagi”: It refers to the whole mountain range in the area. Its best-known attractions are Akagi Shrine, Lake Onuma (大沼) and Mount Kurobi (黒檜山). While I was there, I took a series of trails going through some of the peaks surrounding the lake. This page can serve as a reference (although it differs a bit from what I did).