Matsushiro Onsen's unique rusty water at Matsushiro-sou (overnight-use bath)
松代荘に会議の為に行ったがせっかくだったからお風呂にも入らせて頂きました。松代は鉄分の強い温泉。白い手ぬぐいを入れたら、オレンジになると言う。今回は実際にやってみたので、その通りでした。
本格的なお湯。私が大好き。長野県の温泉はミルキー（濁り）の湯や緑色、硫黄泉、沢山ある。その中で、松代の鉄分のお湯が宝物の一つ。
松代温泉は主にこの松代荘と加賀井温泉「一陽館」の二つです。両方共は本格的な鉄分のお湯。松代荘は市営の温泉施設で設備が綺麗に揃っています。一陽館は比較的にしおっぽいです。混浴の露天風呂もあります。それぞれの良さがあると言うか、両方入った方がお勧め。
During a recent meeting at Matsushiro-sou, I made the best of the opportunity and had a soak in their onsen bath. Matsushiro Onsen is famous for its orange-colored water that comes from a high iron mineral content. You dip your white towel in it and it comes out orange. (I actually tried it, and it's true!)
There are 2 main bath facilities in Matsushiro Onsen. Matsushiro-sou is run by the city, and has impeccable changing room and shower facilities. Ichiyou-Kan (technically in Kagai Onsen but the two are literally a couple hundred meters apart) is relatively, well, rustic. One of its features is a mixed-gender outdoor bath.
Nagano is fortunate to have so many great types of onsens -- milky water, green water, sulfur springs, and so many more. Matsushiro's rusty onsen rates right up there with the best.
一陽館 Ichiyou-Kan
非公式Unofficial site
Outdoor baths
