5/10/2023 0 Comments The old man and the seapdf![]() ![]() “Cannon Cliff is one of the largest cliffs in the eastern United States and it looms over a massive pile of rocky debris ranging in size from sand to boulders larger than cars,” says Maclay. Through the modern 3D model, viewers can zoom around Cannon Cliff, which is approximately one mile across and 1,000 feet high and see where the Old Man used to be located. “I’m really happy to be part of this project helping to digitally bring the Old Man back to life.” “As a New Hampshire native, I visited the Old Man many times as a child and like so many other state residents I felt a real sense of loss when it finally collapsed,” says Casana, a professor of anthropology. By applying photogrammetry, a technique akin to the way that eyes provide depth perception, Maclay was able to create a 3D model of Cannon Cliff with and without the Old Man. Maclay processed the imagery in the Planetary Surface Processes Computing Lab led by Marisa Palucis, an assistant professor of earth sciences. They then reconstructed the now-lost profile using original film negatives taken between 19 that documented the Old Man and surrounding area during maintenance conducted by the profile’s caretakers. As part of the research project, Maclay and collaborators Jesse Casana and Carolin Ferwerda at Dartmouth’s Spatial Archaeometry Lab performed aerial surveys of Cannon Cliff using a drone. ![]()
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