Mitsumine / Nakatsugawa Boulder.

Location : Saitama-ken chichiBugun Ohtakimura.
Kind of Rock : Limestone.
Seasons : Best = Winter (11~3).
Seasons : Good = Fall ~ Spring.
Seasons : Poor = Summer (6~9) rainy & hot.
Number of Problems : over 230.

Mitsumine is another riverside bouldering venue similar to Mitake but is very quiet and peaceful due to its location in the valley floor. Mitsumine's limestone is unique to the area with good friction not like that found with sandstone or granite. This original texture has produce some very unusual and challenging boulder problems.