Ofu-Olosega
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2008-05-31T00:51:54Z
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{{Infobox Mountain
| Name = Ofu-Olosega
| Photo = Ofu-OlosegaFromSpace.jpg
| Caption = Ofu-Olosega from Space Shuttle.
| Elevation = 639 m (2,096 feet)
| Location = [[American Samoa]]
| Prominence = 639 m
| Coordinates = {{coor d|14.175|S|169.618|W|type:mountain_region:US}}
| Topographic map = [[United States Geological Survey|USGS]]
| Type = [[Shield volcano]]es
| Age =
| Last eruption = [[1866]]
| First ascent =
| Easiest route =
}}
'''Ofu''' and '''Olosega''' are parts of a volcanic doublet in the [[Manua|Manu‘a Group]] of the Samoa Archipelago—part of [[American Samoa]]. Although geographically separate volcanic remnants, only a narrow [[strait]] (Asaga) naturally bridged by a shallow [[coral reef]] separates them. Before 1970, one had to wade between the two islands at low tide; now a road bridge over the straight connects villages on Ofu with those on Olosega.
== Ofu ==
Ofu is the western part of the volcanic outcrop of Ofu-Olosega Island. The main village of [[Ofu]] is located on the western shore, protected behind an offshore islet (eroded [[tuff cone]]) known as [[Nu‘utele]]. Ofu has a small airport and a boat harbor that serve the population on Ofu and Olosega.
[[Image:AmSamoa Ofu 160.JPG|thumb|left|300px|South shore of Ofu seen from Olosega across the narrow straight that separates them. The sharp peak, an eroding dike complex, is named Sunu‘itao.]]
Most of the southern shore and associated coral reef are part of the [[National Park of American Samoa]]. The U.S. [[National Park Service]] is presently (2005) negotiating with village councils on Olosega to expand the park around that island.
The island forms the [[Ofu County]] subdivision of the [[Manua|Manua District]]. It has a land area of 7.215 km² (2.786 sq mi), and had an official population of 289 persons as of the [[United States Census, 2000|2000 census]].
== Olosega ==
Olosega Island is a remnant of the Sili [[shield volcano]], the [[caldera]] of which may lie submerged off the north shore. The undersea eruption of 1866 was actually 3 km east of Olosega, on a [[submarine ridge]] that extends eastsoutheast to nearby [[Tau, Samoa|Ta‘ū]].
The island forms the [[Olosega County]] subdivision of the [[Manua|Manua District]]. It has a land area of 5.163 km² (1.993 sq mi), and had an official population of 216 persons as of the 2000 census.
There are two villages on Olosega: Olosega and [[Sili]]. Sili now consists of but one standing residence after much of the village was destroyed by hurricanes (and subsequently abandoned). Nearly all of the population of Olosega now resides in Olosega village along the southwestern-facing shore.
==References==
* Office of the Governor. 2004. ''Manu‘a ma Amerika''. A brief historical documentary. Manu‘a Centennial. 16 July 1904. 16 July 2004. Office of the Governor, American Samoa Government. 20 p.
* {{VNUM | 1=0404-01=}}
* [http://factfinder.census.gov/servlet/DTTable?_bm=y&-context=dt&-PANEL_ID=p_dt_geo_map&-ds_name=DEC_2000_IAAS&-CONTEXT=dt&-mt_name=DEC_2000_IAAS_P001&-tree_id=405&-errMsg=&-transpose=N&-redoLog=true&-all_geo_types=N&-geo_id=06000US6002059300&-geo_id=06000US6002060900&-search_results=04000US60&-format=&-_lang=en&-search_map_config=|b=50|l=en|t=4001|zf=0.0|ms=sel_00dec|dw=0.9528487917191559|dh=0.6838460131961157|dt=gov.census.aff.domain.map.EnglishMapExtent|if=gif|cx=-67.48042614595042|cy=18.385966173167105|zl=6|pz=6|bo=318:317:316:314:313:323:319|bl=362:393:358:357:356:355:354|ft=350:349:335:389:388:332:331|fl=381:403:204:380:369:379:368|g=04000US72&-show_geoid=Y Ofu County and Olosega County, Manu'a District, United States Census Bureau]
==External links==
* [http://www.nps.gov/npsa/pdf/manua.pdf National Park Service map of the Manu‘a Islands]
* [http://soundwaves.usgs.gov/2004/10/fieldwork3.html Persistence of Coral Reefs Under Extreme Environmental Stress in American Samoa] G. Piniak, C. Birkeland, and G. Garrison (2004). University of Hawaii.
{{American Samoa}}
<!--will be Geography of ... in future-->
[[Category:Islands of American Samoa]]
[[Category:Mountains of American Samoa]]
[[Category:Volcanoes of American Samoa]]
[[Category:Shield volcanoes]]
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