Comparative Aerial Photos and Figures
Eight pairs of North Cascades photographs are featured here, with a final figure outlining glacial change on Klawatti Glacier and in the Thunder Creek Valley. Each photographic pair consists of a mid-20th century and an early-21st century photograph taken from approximately the same location. The 1967 and 1958 images were photographed by Austin Post as part of a comprehensive glacier inventory. The corresponding 21st century images were taken by John Scurlock, a local North Cascades pilot and photographer. The comparative photographs clearly show substantial changes in glacier area, and thickness.