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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 Trundling ： ウィキペディア英語版 Trundling Trundling is the practice of rolling large rocks or boulders down hillsides. It is discouraged in many areas, for reasons of safety and environmental impact. Its practice can be traced back to rock climbers in the 18th century in North America.〔Waterman, Laura, Guy Waterman, and S. Peter Lewis. ''Yankee Rock and Ice: A History of Climbing in the Northeastern United States''. Stackpole Books, 2002. ISBN 0-8117-3103-0 p. 2.〕 More specifically, "Boulder Trundling may be defined as the propulsion of fragments of the Earth's crust down mountain slopes of suitable inclination sooner than would occur from the interaction of natural forces."〔S. F. Forrester, ''The Rucksack Club Journal'', 1931.〕 == See also == * Rock Stars (documentary series) 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「Trundling」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.