- Mount Adams Summit Hike (OregonHikers.org)
In our area, Mount Adams, at 12,276’, is the highest summit attainable via a day hike; however, most people do it as a backpack, stopping overnight at the Lunch Counter (9,400’) and heading up the final leg early the next day. Indeed, an overnight might be necessary for acclimatization purposes. For fit hikers, this trip is eminently possible in good weather, and views from the Lunch Counter at sunset and from the summit on a summer morning are the just rewards. Lower down on the route, there are alpine parklands, small wildflower meadows, and rushing streams.
- United States and Canada Obsidian Source Catalog (sourcecatalog.com)
Welcome to the U. S. and Canada Obsidian and FGV (Fine-Grained Volcanic Toolstone) Source Mapping Project home page. For many years, we’ve been chasing down obsidian and FGV sources in the western United States and have promised that someday - when enough source information was finally available - we would begin creating maps that illustrate the geographic patterning of these archaeologically-significant prehistoric sources of natural glass and volcanic toolstone. That day has finally come and we are currently in the process of assembling and producing source maps for the western United States and Canada. Along with a few states (and provinces) for which we still lack good GIS coverages or adequate source data, we’re currently working on regional maps that illustrate the spatial ranges of several geographically-extensive sources.
- Obsidian (Wikipedia)
Obsidian (/əbˈsɪdi.ən, ɒb-/ əb-SID-ee-ən ob-) is a naturally occurring volcanic glass formed when lava extruded from a volcano cools rapidly with minimal crystal growth. It is an igneous rock.