River Barrow trail: “The grassy towpath is the green frame for the river,” according to Olivia O’Leary River Barrow trail: “The grassy towpath is the green frame for the river,” according to Olivia O’Leary. Photograph: Paddy Woodworth

“Step out on the grassy way which is the Barrow towpath and you have stepped into another world. You can walk along the river for miles without hearin(...)

All along the banks of the Royal Canal: a small tortoiseshell butterfly. Photograph: Bart Busschots

The last refuge of nature in our overcrowded world is often, ironically enough, to be found in obsolete remnants of human industry.  Our canal s(...)