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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Valles Caldera ： ウィキペディア英語版 Valles Caldera Valles Caldera (or Jemez Caldera) is a wide volcanic caldera in the Jemez Mountains of northern New Mexico.〔 Hot springs, streams, fumaroles, natural gas seeps and volcanic domes dot the caldera floor landscape.〔 The highest point in the caldera is Redondo Peak, an resurgent lava dome located entirely within the caldera. Also within the caldera are several grass valleys () the largest of which is Valle Grande (; ), the only one accessible by a paved road. Much of the caldera is within the Valles Caldera National Preserve, a unit of the National Park System. ==History== Use of Valles Caldera dates back to the prehistoric times: spear points dating to 11,000 years ago have been discovered.〔Anscheutz, Kurt F. and Merlan, Thomas (2007). ("More than a scenic mountain landscape: Valles Caldera National Preserve land use history" ). U.S. Department of Agriculture Rocky Mountain Research Center, Fort Collins, CO〕 Several Native American tribes frequented the caldera, often seasonally for hunting and for obsidian, used for spear and arrow points. Obsidian from the caldera was traded by tribes across much of the Southwest. Eventually, Spanish and later Mexican settlers as well as the Navajo and other tribes came to the caldera seasonally for grazing with periodic clashes and raids. Later as the United States acquired New Mexico as part of the Treaty of Guadalupe Hidalgo in 1848, the caldera became the backdrop for the Indian wars with the U.S Army. Around the same time, the commercial use of the caldera for ranching, and its forest for logging began. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Valles Caldera」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.