Hells Canyon Adventures Share: Guides and Outfitters Hells Canyon Adventures Visit Website PO Box 159 Oxbow, OR 97840 (541) 785-3352 (800) 422-3568 (541) 785-3353 (fax) http://www.hellscanyonadventures.com About About Experience the end of the road with the only company that offers one-day white water rafting trips, jet boat tours, and fishing charters that start at the south entrance of Hells Canyon.