Our members are the backbone of the Colorado Grotto. We are a 501(c)3 non-profit, therefore, the majority of funding is from our very own members through membership and donations. Allocated funds allow us to support educational and scientific endeavors related to caving. Attendance to our meetings and events are free, but your support is appreciated. The cost to become a member is $10 and can be paid via PayPal. The buttons below will direct you to another site.