For decades, a legend similar to the Asian wildman known as Bigfoot has circulated in the primal forests of North America. In 1951, explorer Ivan Marx first discovered Bigfoot footprints in Northern California, prompting him to delve deeper into the search for this mysterious creature. In 1958, he captured a photograph of a large, black Bigfoot in the mountains of Nevada. Although he did not want to get too close, the photo remains a valuable piece of evidence. In 1970, Marx and Swiss researcher René Dahinden found a series of Bigfoot footprints in Washington State and created plaster casts of them. Dr. Krantz, an anthropologist at Washington State University, examined these footprints and deemed them highly authentic.

In 1972, a massive white-haired Bigfoot caught people's attention during a snowstorm in Northern California. In 1977, Marx discovered a male Bigfoot in Shasta County, California, which exhibited unusual behavior by scooping water from a swamp and swatting away mosquitoes. That same year, Marx and his wife narrowly escaped an attack while tracking the creature.

Anthropologists speculate that Bigfoot may resemble a robust South American ape or the Pongo pygmaeus, being a herbivorous hominid that thrives in moist forest environments. Bigfoot is believed to be not only an adept swimmer but also capable of diving, sustaining itself on aquatic food sources. These mysterious footprints continue to attract countless adventurers and scientists.