The Dome Room in New Mexico’s Carlsbad Cavern marked the first underground color photograph ever shot, published in the September 1925 issue of National Geographic.
新墨西哥州卡尔斯巴德洞窟的圆顶室，是有史以来第一张彩色照片，刊载于1925年国家地理杂志上。
An elevator lowers you into the world of Carlsbad Cavern, the big cave at Carlsbad Caverns National Park.
VOA: special.2011.04.11
The authors of the book "Carlsbad Cavern: The Early Years" say Jim White took the job for the chance to keep exploring the cave.
VOA: special.2009.12.07
Some people might even say Abijah Long was the first real explorer of Carlsbad Cavern.
VOA: special.2009.12.07
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