American explorer Richard Byrd and three companions make the first flight over the South Pole, flying from their base on the Ross Ice Shelf to the pole and back in 18 hours and 41 minutes.
Richard Evelyn Byrd learned how to fly in the U.S. Navy and served as a pilot in World War I. An excellent navigator, he was deployed by the navy to Greenland in 1924 to help explore the Arctic region by air. Enamored with the experience of flying over glaciers and sea ice, he decided to attempt the first flight over the North Pole.
On May 9, 1926, the Josephine Ford left Spitsbergen, Norway, with Byrd as navigator and Floyd Bennet as pilot.
On page 3 of the Passage, review line 21 of the poem along with its footnote on page 4. Also review the picture and caption on page 5 Based on the picture and the text, what is a likely reason that the poet refers to "Etna smoking" in line 21?