The Oregon High Desert Grotto publishes the Oregon Underground newsletter. It's free with a membership to the grotto. It comes out seasonally, or as time permits. Typically, the newsletter is sent out in a PDF format to all the members by email because manually printing them and mailing them is cost restrictive! Take a stroll through this thumbnail version of Issue 33 released in 2011.
The Oregon High Desert Grotto is an internal organization of the National Speleological Society. We are dedicated to the study and preservation of caves.
Membership in the Grotto is $15 a year and comes with an invitation to the Yahoo! Groups forum, access to the Grotto library, issues of the Oregon Underground newsletter, and information on yearly caving activities and trips.
Glacier Cave Explorers: donate here