- Big Hole (Oregon)
Infobox Mountain
Name=Big Hole
Photo=East rim of Big Hole, Oregon.jpg
Caption=East rim of Big Hole, Oregon
Elevation= 4750 ft
Location=Lane County, Oregon, USA
Range=Cascade Range
Prominence =
Coordinates = coord|43.42528|N|121.31222|W|type:mountain|format=dms
TopographicUSGS Big Hole
Type=maar
Volcanic_Arc/Belt=
Age=
Last eruption= Possibly 20,000 years ago [cite web|url=http://www.gsajournals.org/perlserv/?request=get-abstract&doi=10.1130%2F0016-7606%281970%2981%5B1823%3ASAOTEM%5D2.0.CO%3B2|title= Some Aspects of the Eruption Mechanism of the Big Hole Maar, Central Oregon|date=1970-01-14 |accessdate=2007-08-30]
First ascent=
Easiest route=Big Hole is a large
maar (explosion crater) in theFort Rock Basin of Lake County, centralOregon , northeast ofCrater Lake , nearOregon Route 31 . It is approximately 6000 ft (1820 m) across and convert|300|ft|m deep. [cite book
last = McArthur
first = Lewis A.
authorlink =
coauthors = Lewis L. McArthur
title = Oregon Geographic Names
origyear = 1928
edition = Seventh Edition
year = 2003
publisher =Oregon Historical Society Press
location = Portland,Oregon
id = ISBN 0-87595-277-1 (trade paperback), ISBN 0-87595-278-X (hardcover) ]It is close to another smaller, but less-eroded maar crater,
Hole-in-the-Ground .References
External links
*cite web | title = CVO Menu - Fort Rock and Vicinity, Oregon | publisher =
USGS /Cascades Volcano Observatory
date = 2002-03-06 | url = http://vulcan.wr.usgs.gov/Volcanoes/Oregon/FortRockBasin/description_fort_rock_vicinity.html
accessdate = 2008-04-29
*cite journal | last = Heiken | first = G. H. | coauthors = R. V. Fisher and N. V. Peterson
title = A Field Trip to the Maar Volcanoes of the Fort Rock - Christmas Lake Valley Basin, Oregon
journal = Geological Survey Circular | issue = 838 | publisher =United States Geological Survey
date = 1981 | url = http://www.nps.gov/history/history/online_books/geology/publications/circ/838/roadlog6.htm
accessdate = 2008-04-29
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