Giant bones challenged 18th-century intellectuals By Dan Hurley Post columnist Today, the valley is dry, dusty and unremarkable, but 250 years ago it was one of the most fascinating spots ever discovered in the North America. From the very first time in 1739 that local Indians led a contingent of French explorers to the salt licks near the Ohio River in what is today Boone County, Ky., the spot raised intellectually troubling questions. European and American scientists understood the importance of salt licks and why thousands of modern buffalo, deer and elk beat broad paths to the marshy lick, but...