But the canal company ran out of money as faster railroads stole most of their business, and the C&O Canal never reached Pittsburgh and the Ohio River. Remnants of its 74 stone locks, as well as brick aqueducts that brought it water from the river, remain. So does one long tunnel, just ________________________.

A famous standoff took place there when boats arrived from each direction, and neither captain would back off. Finally a canal company official showed up and set fire to sheaves of green corn ________________________out of the tunnel.In the Washington area, the C&O Canal still holds water. The National Park Service runs replica boats out of Georgetown. They're a big tourist attraction. And most of the old towpath remains, all the way to Cumberland. It's a beautiful, ________________________and canal lovers.

(1)wide enough for one boat to get through
(2)to literally smoke the boatsmen 
(3)wild trail for hikers, bikers, horseback riders