USGS Publications Warehouse is a digital data warehouse containing citations and electronic versions of the entire report if available of USGS published reports and thematic maps.

The US Geological Survey's Cascades Volcano Observatory Website, which focuses on hazards, activity, history, and monitoring of volcanoes, with emphasis on ...

Wilderness.net is a comprehensive, interative resource for wilderness managers, visitors, educators, scientists, academics, advocates and political figures.

The Global Volcanism Program (GVP) seeks better understanding of all volcanoes through documenting their eruptions--small as well as large--during the past 10,000 years. The range of volcanic behavior is great enough, and volcano lifetimes are long enough, that we must integrate observations of contemporary activity with historical and geological records of the recent past in order to prepare wise

Amar Andalkar's Ski Mountaineering and Climbing Site includes two online guidebooks, 'Skiing the Pacific Ring of Fire and Beyond' and 'Skiing the Cascade Volcanoes', along with sections on Ski Mountaineering Equipment and my personal Photos and Trip Reports.

SummitPost.org : Climbing, hiking, mountaineering