The new “Treetop Quest” attraction is due to open two months from today at Explore Park, one that will bring zip lines to the valley. And if all goes well, those lines may later extend high over the Roanoke River gorge. The park includes property on both sides of the river, but so far, the Bedford County side has never been used much. That may change in a few years, as WFIR’s Evan Jones reports: