Always interested in the history of the Bible and Noah's Ark, Fasold studied pre-Christian accounts of the Deluge and came to believe that the ark would be found not on Mt. Ararat but somewhere to the southwest. In 1985, Fasold teamed up with Ron Wyatt to investigate the Durupınar site, a boat-shaped mound site named after Turkish Army Captain İlhan Durupınar who identified the formation in a Turkish Air Force aerial photo while on a mapping mission for NATO in 1959. In 1985, Fasold and Wyatt were joined by geophysicistJohn Baumgardner for the expedition recounted in Fasold's The Ark of Noah. As soon as Fasold saw the site, he exclaimed that it was a ship wreck. Fasold had brought a state-of-the-art frequency generator, set on the wavelength for iron and searched the formation for internal iron loci. This technique was later compared to dowsing by the site's detractors. Fasold and the team measured the length of the formation as 538 feet, close to the 300cubits of the Bible if the Egyptian cubit of 20.6 inches is used. Later measurements by others found it to be 515 feet, exactly 300 Egytpian cubits in length. Fasold believed the team had found the fossilized remains of the upper deck and that the original reed substructure has disappeared. In the nearby village of Kazan, so-called drogue stones that they believed were once attached to the ark were investigated.
''The Ark of Noah'' and the break with Wyatt
Ron Wyatt and David Fasold were both featured on a 20/20 television special soon after their expedition. Charles Berlitz wrote of Fasold's searches in his 1987 book The Lost Ship of Noah, also printing part of an extensive 1985 interview with Fasold on pages 157-161. Wyatt wrote a small booklet, presenting his evidence found at the site, including what he considered petrified wood from deck timbers, pitch, and metal rivets. Fasold took a different approach, concentrating on pre-biblical literature and, as a nautical engineer, recognized the likelihood that it was made, like other ancient large boats and rafts, of reeds. He concluded that the enigmatic "gopher wood" of Genesis 6:14 was in fact a covering of bitumen and reeds, and the words was related to kaphar or pitch. He also made the claim that there were two Dilmuns, one located on Bahrain and the original one in the Zagros mountains. In 1988, Fasold published his own book, The Ark of Noah. In The Ark of Noah, Fasold took many fundamentalists and creationists to task for insisting that the ark was rectangular in shape, made of wood, and must have landed on Mount Ararat. He also critically examined and dismissed many previous ark sightings at Ararat. The exposure of his find in the media led to further expeditions to the site in the late 1980s and early 1990s. During this time, Wyatt supposedly discovered petrified wood and metal items, and exposed the remains of decayed rib timbers at the site. Fasold doubted many of Wyatt's claims during this time, and broke with Wyatt's interpretations. During this time, Fasold formed the Noahide Society and issued a newsletter called Ark-Update. He also produced several audio and video tapes.
Doubts and changing views
During the 1990s, Fasold was caught between three opposing camps, all of whom derided his interest in the site: orthodox creationists who believed the ark could only lie on Mt. Ararat; Wyatt and others who continued their research and reported significant discoveries; and skeptical geologists and biblical minimalists who called the site a hoax. After a few expeditions to the Durupınar site that included drillings and excavation in the 1990s, Fasold began to have doubts that the Durupınar formation was Noah's ark. Following a September 1994 site visit with geologist Ian Plimer, he noted: "I believe this may be the oldest running hoax in history. I think we have found what the ancients said was the Ark, but this structure is not Noah's Ark." At other times he claimed that the site was only what the ancients believed was Ziusudra's 'ark of reeds'. In 1996 Fasold coauthored a paper with geologist Lorence Collins entitled "Bogus 'Noah's Ark' from Turkey Exposed as a Common Geologic Structure" that concluded the boat-shaped formation was a curious upswelling of mud that happened to look like a boat. In April 1997 during his testimony in an Australian court case Fasold repudiated his belief in the Ark, and stated that he regarded the claim as "absolute BS". Ark researchers David Allen Deal and Robert Michelson, and Australian friend and biographer June Dawes reported that before his 1998 death Fasold again claimed the Durupınar site to be the location of the ark. Dawes wrote:
He kept repeating that no matter what the experts said, there was too much going for the site for it to be dismissed. He remained convinced it was the fossilized remains of Noah's Ark.
In 1986 Fasold, along with Ron Wyatt, was one of the first Americans to investigate the notion that Jabal al-Lawz in Saudi Arabia might be the Biblical Mount Sinai. During an illegal trek through the desert around the mountain, Wyatt and Fasold were arrested and detained for a short period. Former New York Times journalist Howard Blum wrote of Fasold's journeys in his 1998 book The Gold of Exodus.
Plimer case
In 1997, Fasold was involved in an Australian lawsuit against creationist Allen Roberts, who reproduced some of Fasold's artwork without permission. Co-plaintiff Ian Plimer, an Australian humanist and skeptic, sued Roberts' organization Ark Search under the Fair Trading Act, alleging that they had made false and misleading claims about the Durupinar site. The case, touted as a second Scopes Monkey Trial, failed, with Judge Ron Sackville ruling: "Courts should not attempt to provide a remedy for every false or misleading statement made in the course of public debate on matters of general interest." Fasold described the award of $2,500 Australian dollars in damages as for copyright infringement as "a slap in the face."