😜 The 1960 Edition Encyclopedia Americana referred to Antarctica as having a 13,000 foot dome on page 14, also known as the firmament. The excerpt refers to an American Antarctic expedition from December 20, 1955 to January 18, 1956 to explore unknown landmasses in Antarctica. When they returned, they concluded their expedition proved the inland featureless character of Antarctica with a dome 13,000 feet high at a latitude of 80°S and longitude of 90°E. 🍿 🐸 🇺🇸

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