The Spot: The Grand Canyon's Redwall Cavern
拍摄现场：大峡谷的红墙洞
From the Redwall Cavern to Crystal Rapid and Havasu Creek to Marble Canyon and beyond!
从红墙洞穴水晶疾速和哈瓦苏溪大理石峡谷和逾越！
Perhaps the MOST spectacular feature of the Grand Canyon, its Redwall limestone cliff, stands about half way up the chasm and is practically vertical.
也许，大峡谷最引人注目的风貌特色是“红墙”石灰石悬崖，它耸立在裂口半当中，几乎是垂直的。
Perhaps the MOST spectacular feature of the Grand Canyon, its Redwall limestone cliff, stands about half way up the chasm and is practically vertical.
也许，大峡谷最引人注目的风貌特色是“红墙”石灰石悬崖，它耸立在裂口半当中，几乎是垂直的。
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