Wyatt was NEVER in Saudi Arabia.
From what I remember, because he was unable to acquire a visa, he entered Saudi Arabia illegally and was later arrested.
Ron Wyatt believed that the crossing of the Red Sea by Moses and the Israelites occurred at a place [today] called Nuweiba, on the eastern shores of the Sinai. Opposite, in Saudi Arabia, he claims to have come across a pillar erected by King Solomon, marking the place where the Red Sea crossing occurred.
He also visited Jebel el Lawz and the surrounding plains.
There are a number of persuasive reasons for believing he had stumbled upon the true location of Mount Horeb.
1. It was outside the Egyptian sphere of influence. Egyptian mines existed in the Sinai, and was seen as part of their border territory.
2. Midian was beyond the Gulf of Aqaba, a safe distance from Egypt, and a land with huge expanses of sparsely populated desert.
3. Midian was a land that Moses knew well. He had escaped there after committing murder in Egypt. He married and lived in Midian with his father-in-law, Jethro.
4. It was on Mount Horeb, in Midian, that Moses encountered God in the burning bush. This same site was visited by Elijah, and by Paul. This means that Mount Horeb was known to be in Arabia in the Common Era.
5. The Qur'an records the wars that Muhammad fought against Jewish tribes around Medina. Why had Jewish tribes chosen to live in this area of Arabia? Was it because of the biblical traditions that associated this region with Mount Sinai (Horeb)?
6. In the accounts given by Josephus of the Exodus, he describes the land at the place where the Hebrews became trapped. This description has similarities to the terrain found around Nuweiba, whereas nothing similar can be found on the Egyptian Red Sea shore line.
7. The natural route out of Goshen would have been along the highway that linked the Delta in Egypt with the town of Aqaba. It is very likely that the start of the exodus would have been along this route, before cutting south into the Sinai.