Hot springs that remain intact Hidden hot spring list(Gunma) [Hot springs deep inside Japan]

List of Hot springs in Japan that remain intact or a little bit artificial or artificial with some recomendations.
sangakuonsen.com (*Writen in Japanese.)

sangakuonsen.com (*Writen in Japanese.) for the location of a Mountain on Google map.

(Caution!)
H2S gases or a Bear can be conflict at the site listed below.Please keep out those sites,even if at your own risk. (Must see if you don't know the risk of H2S or anoxia at all. written in Japanese.) anoxia/H2S-Helth department Japan
(*)number of astarisks represents impression. The list of Ryokans with hidden onsen or not known much.

Prefecture	Area-name of SPA	hidden spring type	charge	mix/seperate	impression	comment	image(link)
Tochigi	Shirane-san system Herb hot spring	remain intact	Free	Mix	*****	The scene of 滝越, strong acid
Tochigi	Shirane-san system The waterfall hot spring of a jhofu	bath house			*****	It is buried and they are desolation and the earth.
Tochigi	Shirane-san system Kusatsu Hot Spring	pablic bath		Seperate	***	The cooled fountainhead
Gunma	Shirane-san foot Shiriyaki Onsen	remain intact	Free	Mix	***	Dam Shimokawadoko
Gunma	Nakanojo Shima Onsen	remain intact	Free	Mix	**	Hinoki bath charter full enjoyment
Gunma	Nakanojo Kawarayu-onsen	pablic bath	UpToU	Seperate	***	Fountainhead iron pot
* There might be some places that described as free in this page but some donations up to you expected.