The Great Allegheny Passage National Recreation Trail joins the C&O Canal Towpath in Cumberland, MD at the statue of the mule and mule driver; photo copyright © 2010 by Mary Shaw
On the Great Allegheny Passage: The bridges were constructed on the ground near the tracks, and early one morning the railroad closed the line for a couple of hours so the bridges could be placed; photo copyright © 2010 by Mary Shaw
The Great Allegheny Passage trail connection from McKeesport to Pittsburgh PA requires two crossings of the active railroad line; photo copyright © 2010 by Mary Shaw
The bridges were constructed on the ground near the tracks, and early one morning the railroad closed the line for a couple of hours so the bridges could be placed; photo copyright © 2010 by Mary Shaw
On a cross-country ski trip in Ohiopyle along the Youghiogheny River Trail; photo copyright © 2010 by Mary Shaw
Winter offers cross-country skiing on the trail; here skier is crossing the Ohiopyle Bridge; photo copyright © 2010 by Mary Shaw
The Youghiogheny River Trail is part of the Great Allegheny Passage, which is also a National Recreational Trail; photo copyright © 2010 by Mary Shaw
Volunteers working at Valley Brook, west of US 19 in Pennsylvania; photo copyright © 2010 by Mary Shaw
Winter weather brings down trees on the trail. In the spring, volunteers form work parties to clear the trail again; photo copyright © 2010 by Mary Shaw
New stairs bridge the gap: the Montour Trail, otherwise continuous for many miles in both directions, had been interrupted at this intersection by a missing bridge. The trail continued to both ends of the demolished bridge, but the bridge is 15 feet above the road; photo copyright © 2010 by Mary Shaw
"Trail travelers had been forced to detour for a half mile along busy PA 50. An all-volunteer project of the trail group reduced the hazards for trail users by installing a stairway from the old bridge down to the side of the road. The slope of the stairs and a wheel trough provide easy passage for bicyclists; photo copyright © 2010 by Mary Shaw
In the 1870s oil producers learned to power numerous pumps with a single engine by driving an eccentric gear that pulled and pushed on rods strung out to the wells; photo copyright © 2010 by Mary Shaw
This former power house once operated 14 wells on the river bank along what is now the Samuel Justus rail trail; photo copyright © 2010 by Mary Shaw
Brooke Beazley and Glenn Myers of the Cheaha Trail Riders installing traffic counters on one of the OHV trails in Minooka Park near Jemison, AL; photo by Nancy Geehan
Minooka Park National Recreation Trail System Campground near Jemison, AL; photo by Gerald Arrington
Statues of Marietta Johnson and her students on the Eastern Shore National Recreation Trail, Fairhope, AL; photo by Rob Grant
Gulf Oak Ridge on the Hugh S. Branyon Backcountry Trail in Orange Beach, AL; photo by Nicole Woerner
Gulf Oak Ridge on the Hugh S. Branyon Backcountry Trail in Orange Beach, AL; photo by Nicole Woerner
Gulf Oak Ridge on the Hugh S. Branyon Backcountry Trail in Orange Beach, AL; photo by Nicole Woerner
Hugh S. Branyon Backcountry Trail in Orange Beach, AL; photo by Nicole Woerner