This collection of pages continues to grow and all sources have not been visited so the URL's may not be accurate. In some cases there may be references to commercial operations on the Internet. No endorsement from either the Outdoor Action Program or Princeton University should be inferred or implied. The external pages referenced here are not maintained by the Outdoor Action Program at Princeton University. Princeton University assumes no responsibility for the contents of pages referenced below and assumes no liability for any individual's use of or reliance upon any material contained or referenced herein.
Last updated 01/16/99
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The information provided here is designed for educational use only and is not a substitute for specific training or experience. Princeton University and the author assume no liability for any individual's use of or reliance upon any material contained or referenced herein. When going into the outdoors it is your responsibility to have the proper knowledge, experience, and equipment to travel safely. The material contained in this article may not be the most current. This material may be freely distributed for nonprofit educational use. However, if included in publications, written or electronic, attributions must be made to the author. Commercial use of this material is prohibited without express written permission from the author. Copyright © 1997 Rick Curtis, Outdoor Action Program, Princeton University.