I've been pretty remiss in updating this site lately, but I plead busy-ness and distraction. Among a variety of other things, I've been working on an English-language site for the Koryū Shugen Honshū, a group based in Higashine, Yamagata, but which is looking to do more teaching in Europe and North America. They're a very interesting organization, and as far as I'm aware, the only shugendō group which has achieved official government recognition as an independent spiritual sect, unaffiliated with any temple of the Shingon-shū or the Tendai-shū.
The web site is here, please have a look. There's a mailing list you can sign up for, and information about shugendō mountain training in Higashine this coming May.