A ground photograph of the December 1974 lava flow (slide #26) shows the difference between the radar-bright a’a flows (dark in this image) and the smoother pahoehoe flows. The field of view is about 1 kilometer from side to side and is looking west across the Ka’u Desert. The profile of Mauna Loa is in the background. Photograph courtesy of P. Mouginis-Mark. Right click here to download a high-resolution version of the image (8.83 MB) |