翻訳と辞書 Words near each other ・ Crystal Gayle ・ Crystal Gayle (album) ・ Crystal Gayle albums discography ・ Crystal Gayle in Concert ・ Crystal Gayle singles discography ・ Crystal Gayle Sings the Heart and Soul of Hoagy Carmichael ・ Crystal Gayle's Greatest Hits ・ Crystal gazing ・ Crystal Gazing Luck Amazing ・ Crystal Geoffré ・ Crystal Geyser ・ Crystal Geyser Water Company ・ Crystal Glacier ・ Crystal Globe ・ Crystal goby ・ Crystal Grottoes ・ Crystal Group ・ Crystal growth ・ Crystal Growth & Design ・ Crystal habit ・ Crystal Harris ・ Crystal Hayes ・ Crystal Head Vodka ・ Crystal healing ・ Crystal Heights ・ Crystal Heights, Nova Scotia ・ Crystal Hill ・ Crystal Hill, Arkansas ・ Crystal Hill, Saskatchewan ・ Crystal Hill, Virginia Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Crystal Grottoes ： ウィキペディア英語版 Crystal Grottoes Crystal Grottoes is the only show cave in the U.S. state of Maryland. It is located on Maryland Route 34 between Boonsboro and Antietam National Battlefield. ==History== Crystal Grottoes was discovered in 1920 in the course of quarrying operations by a road construction crew trying to obtain gravel.〔(Crystal Grottoes web site )〕 A drill bit (for placing explosives) disappeared into a hole, and the crew realized they had found a cave. Blasting produced the entrance which is still used, and in 4/2/1922 the cave was opened to the public. A mapping operation in 1968 revealed about a half mile of passages, but only about one third of the cave is accessed during the tour, which takes about 30-35 minutes. 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「Crystal Grottoes」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.