A man found frozen in a Pennsylvania cave in 1977 has finally been identified, closing the book on a nearly 50-year-long mystery. The Berks County Coroner’s Office identified the remains of the missing man as Nicholas Paul Grubb, 27, from Fort Washington, Pennsylvania. Surprisingly, advanced technology played no role in identifying the “Pinnacle Man,” a moniker inspired by the peak in the Appalachian Mountains near where Grubb was found. Instead, Berks County Coroner John Fielding told reporters at a Tuesday news conference that a Pennsylvania State Police detective discovered the missing link to the cold case the old-fashioned way, by...