As we've been rediscovering during this 250th anniversary year, the Pittsburgh region has played a huge role in the nation's history in everything from innovation to immigration, from architecture to music. Possibly the most important contribution occurred 35 miles southwest of the city and 16,000 years ago: the oldest site of human habitation in North America. Meadowcroft Rockshelter and Museum of Rural Life re-opens tomorrow after being closed for a year for major improvements including a new enclosure for visitors over the excavation site. DUQ's Charlee Song toured the site with David Schofield, the director of the Rockshelter and Museum.
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