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South Sister is the tallest of three volcanic peaks known as the Three Sisters

South Sister is the tallest of three volcanic peaks known as the Three Sisters
South Sister is the tallest of three volcanic peaks known as the Three Sisters in the northwest American state of Oregon.

iss056e094579 (July 10, 2018) — South Sister is the tallest of three volcanic peaks known as the Three Sisters in the northwest American state of Oregon. The International Space Station was orbiting nearly 256 miles above the United States when this photograph was taken by an Expedition 56 crewmember.