Chert crags

Ordered by the number of climbs recorded. About chert.

Rock type All Limestone (534) Granite (314) Sandstone (285) Gritstone (130) Rhyolite (121) Gneiss (41) Schist (35) Slate (25) Dolerite (23) Volcanic Tuff (19) Basalt (16) Culm (15) Quartzite (15) Conglomerate (12) Gabbro (12) Indoor (12) Andesite (5) Greenstone (3) Chalk (2) Chert (2) Syenite (2) Unknown (2) Artificial (1) Serpentinite (1) Shale (1)

Crag	Location	# Climbs
Mitake	Japan / Tokyo	6
Mitsumine	Japan / Saitama	3