Byars, Oklahoma. Byars is a town in McClain County, Oklahoma, United States. The population was 255 at the 2010 census.
The man behind the treasure is Forrest Fenn, an 85-year-old millionaire, former Vietnam fighter pilot, self-taught archaeologist, and successful art dealer in Santa Fe, N.M. No one knows where that treasure chest is but me, Fenn says. If I die tomorrow, the knowledge of that location goes in the coffin with me..
Trivia. 1  Forrest Kaysen is the name of a character in another 2 SWERY games, Spy Fiction and D4. 2  Ironically, Kaysen is the one who provides York with the one of the most powerful weapons to defeat him - the Infinite Magnum. It can be found in the back of his truck after completing one of the side quests.