Join the Grotto

CaveWe’re thrilled that you’re interested in becoming a member!

The purpose of the Cascade Grotto is to promote and advance the study and science of speleology, the protection of caves and their natural contents, and to promote fellowship among those interested in these goals. Membership is open to all persons in the Pacific Northwest interested in these purposes.

First, print and fill out our membership application. Send the completed form* along with your dues (please email any questions about prorated dues to, attn: Treasurer) to our mailing address at:

Cascade Grotto
P.O. Box 66623
Seattle, WA 98166

*Please give us two weeks to process all membership applications, thank you.