We’re thrilled that you’re interested in becoming a member of the Cascade Grotto!

Our reaction when we heard you want to become a member!

Cascade Grotto welcomes members of all backgrounds and walks of life, regardless of sex, race, creed, color, national origin, religion, physical appearance or handicaps, sexual preferences, or gender identity and expression. The Grotto is dedicated to providing a harassment-free experience for everyone. We do not tolerate harassment in any form. Members or participants violating these rules may be sanctioned or expelled from grotto activities and/or membership at the discretion of the leadership. We are proud to live in a state that embraces these values!

Membership is only $20/year per individual (plus only $5 for each additional household member) annually!

Member Benefits include:
– Being part of a caving community of people you never knew existed!

– Members-only access to our Facebook Group and Email caving trips list.

– Invites to exclusive, members-only caving trips!

– Subscription to our newsletter, Cascade Caver.

– Learn about Pacific Northwest Caves and beyond!

– Get instant access to the Cascade Grotto Library online!

Pay with any credit card via the secure PayPal interface below!
(You do not need a PayPal account to use this feature!) 


  1. Please complete a Membership Application (alternatively, you can print it out and mail it to us using the address below).
  2. Select the appropriate membership type below. (Additional household/family members are $5 per person. If you have more than two household members, choose the $30 option).
  3. Click the Buy Now button. This will re-direct you to the PayPal site.
  4. Click “Pay by Credit Card” and follow the prompts! You should receive a confirmation message. As soon as our Admins can address it, you’ll be added to the email list and membership rolls.
  5. Request membership in the Closed “Cascade Grotto” Facebook group if you’d like!
  6. Congratulate yourself on supporting the Cascade Grotto!

Select Type of Membership

Alternatively, you may send a check or money order: 

Cascade Grotto
PO BOX 66623
(current as of 2019)