The 20,320 height had stood since 1952 , when the mountain was measured using a technology called photogrammetry , Treadwell 's announcement said . North America 's tallest peak is 83 feet shorter . The 20,320 height had stood since 1952 . Comment:
North America 's tallest peak is 83 feet shorter . The 20,320 height had stood since 1952 . Comment: