The story begins in 1967, in the dense forests of northern California, specifically in the Onion Mountain area. It was here that a set of unusual footprints were discovered. These prints were not just any footprints; they appeared to have dermal ridges—fine details similar to the friction ridges found in human fingerprints. This discovery was remarkable enough to warrant making plaster casts of the prints, which soon became known as the Onion Mountain Bigfoot casts.
Matt Crowley did a series of reconstructions of the methodologies of casting and found that he could reproduce the ridges, now called desiccation ridges.
However, had a qualified latent friction ridge examiner  been used, there would have been no debate.

https://www.youtube.com/watch?v=sHPQ4WbQG5Y

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