Renewing membership dues
If you are not already a member of Cascade Grotto, please go here:
Join Cascade Grotto! – Cascade Grotto
Cascade Grotto dues are separate from your NSS (National Speleological Society) dues.
*NEW!* Subscription Option: We have recently added the option to automatically renew your membership annually so you never need to worry about your membership lapsing! Just check the “Automatically renew” option below.
Membership Checkout
Pick a plan and choose one-time payment or automatic renewal.
Other payment methods:
Please contact us at cascade_grotto@caves.org if you would like to pay by check or some other method, or if you have more than two household members.