| 词条 | Creelsboro Natural Bridge |
| 释义 |
| name = Creelsboro Natural Bridge | photo = Creelsboro Natural Arch.jpg | photo_alt = | photo_caption = | photo_width = | map = USA Kentucky | map_alt = | map_caption = Map of Kentucky | map_width = | location = Russell County, Kentucky | nearest_city = Creelsboro | coords = {{coord|36|53|05.97|N|85|14|11.13|W|region:US-KY|format=dms|display=inline,title}} | coords_ref = | area = | refnum = | visitation_num = | visitation_year = | governing_body = | url = | embedded = {{designation list | embed = yes | designation1 = NNL | designation1_date = 1987 }} Creelsboro Natural Bridge (more commonly referred to as Rock House or the Rockhouse) is a natural bridge in southwestern Russell County, Kentucky, United States. It is located near the community of Creelsboro, approximately {{Convert|7|mi}} downstream from Wolf Creek Dam, which impounds Lake Cumberland. The Rockhouse is classified as a meander natural bridge because it was created by river erosion of a cliff on the outer side of a sharp meander in the river. Jim Creek flows through it before merging into the Cumberland River. With a span of {{Convert|104|ft}}, it is the seventh largest natural bridge in the United States. HistoryRockhouse strata is over 440 million years old (Upper Ordovician Period, Cumberland Formation, Silty Dolomite). Unlike most natural bridges it is made of dolostone rather than sandstone. First discovered in 1770 by a group of hunters, Rockhouse is a popular site for camping. It was designated a National Natural Landmark by the U.S. National Park Service in 1987.[1] It remains privately owned but is accessible by a short walk from KY 379. Immediately across the river in Clinton County is the private Rockhouse Trace. See also
References1. ^{{Cite web|url= http://www.nature.nps.gov/nnl/site.cfm?Site=CREE-KY |title= Creelsboro Natural Bridge |publisher= National Park Service |work= nps.gov}}
3 : Natural arches of Kentucky|National Natural Landmarks in Kentucky|Landforms of Russell County, Kentucky |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。