More than 1,000 years ago, Indigenous people journeyed into a dark cave on the land now called Missouri and painted nearly 300 detailed images on its walls.
원문출처 : https://www.cnn.com/2021/09/16/us/missouri-picture-cave-auction-indigenous-art-cec/index.html
원문출처 : https://www.cnn.com/2021/09/16/us/missouri-picture-cave-auction-indigenous-art-cec/index.html