  |
The Speleological Society of Japan - http://www.netlaputa.ne.jp/~ssj/index-e.html
Formed in 1975 and consists of councils and special committees. Involved with karst conservation, underground safety and research. Includes contacts. [Japanese and English]. |
| |
Tokyo Speleo Club - http://www.age.jp/~speleo/index-e.html
Meets monthly in Shinjuku. Includes membership requirements, meeting schedule, bulletin board, photos and contacts. [Japanese and English]. |
 |
Speleological Survey Group of Yamaguchi University - http://sty.sv.cc.yamaguchi-u.ac.jp/~speleo/caveinde.html
Began in 1960 and main explorations have been done in the limestone area of Akiyoshi-dai. Includes photos and contacts. [Japanese and English]. |
| |
Edogawa Caving Club - http://member.nifty.ne.jp/Edogawa/index-e.html
Formed in 1982. Offers SRT training and joint expeditions with other groups. Includes lists of longest and deepest caves and contact information. |