Taos County John Doe was a man whose skull was found by hunters in rural Taos County, New Mexico on November 12, 1997. The skull was compared to two missing local men: Ralph Herrera and John Hartenfeld. Herrera was found to have died of natural causes on November 12, 1992, but it is unknown if a comparison was made with Hartenfeld. No further follow-ups were made, and few details are available in his case.