| 词条 | Horse Rock Ridge |
| 释义 |
The Horse Rock Ridge Research Natural Area (RNA) is managed by the Bureau of Land Management (BLM).[2] It is designated by the BLM as both an RNA and an Area of Critical Environmental Concern (ACEC).[3] Elevations within the RNA vary from {{convert|1550|ft|0}} to {{convert|2864|ft|0}}.[1] Hiking trailA hiking trail on Horse Rock Ridge includes views of the Three Sisters, Mount Jefferson and other Cascade peaks.[4] {{portal|Oregon}}References1. ^1 {{cite web|last=Curtis|first=Alan B.|title=Horse Rock Ridge Research Natural Area: Guidebook Supplement 27|publisher=United States Forest Service|url=http://www.fs.fed.us/pnw/pubs/gtr571.pdf|format=PDF|year=2003|accessdate=2012-03-11}} {{coord|44.3012362|-122.8853631|format=dms|region:US-OR_source:GNIS_type:landmark|display=title}}2. ^{{cite web|url=http://www.fsl.orst.edu/rna/sites/horserock.htm |archive-url=https://web.archive.org/web/20050219114139/http://www.fsl.orst.edu/rna/sites/horserock.htm |archive-date=2005-02-19 |title=Horse Rock Ridge Research Natural Area |publisher=Oregon State University |accessdate=2012-02-12}} 3. ^{{cite web|url=http://www.portlandhikersfieldguide.org/wiki/Horse_Rock_Ridge |title=Horse Rock Ridge - Hiking in Portland, Oregon and Washington |publisher=Portlandhikersfieldguide.org |date=2009-12-19 |accessdate=2012-02-12}} 4. ^{{cite news|last=Sullivan |first=William |url=http://special.registerguard.com/web/sportsoutdoors/26506413-41/rock-horse-mile-trail-dike.html.csp |archive-url=https://web.archive.org/web/20110716121307/http://special.registerguard.com/web/sportsoutdoors/26506413-41/rock-horse-mile-trail-dike.html.csp |archive-date=2011-07-16 |title=Horse Rock Presents a Stunning Vista — All a Short Drive Away|work=The Register Guard |location=Eugene, Oregon |page=D2| date=2011-07-12 |accessdate=2012-02-12}} External links
2 : Landforms of Linn County, Oregon|Ridges of Oregon |
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