The Six Dales Trail Book and project is the most extensive development springing from the Walkers Are Welcome Otley project. The trail, which was launched in June 2010, starts in Otley, and winds across the entire length of the superb Nidderdale Area of Outstanding Natural Beauty to end at Middleham, in Wensleydale. Along its 38 mile length, the trail crosses the 5 watersheds that separate the six dales that give the trail its name. From Wharfedale it crosses into Washburndale, then into Nidderdale, Colsterdale, Coverdale and finally Wensleydale. The terrain traversed by the trail varies from quiet steep pastures to high heather moor land, from stretches alongside fast-flowing rivers to stretches through the 18th century parkland surrounding the ruins of Jervaulx Abbey. The entire route is full of interest and opens up areas that have not been downtrodden and eroded by the passage of a million boots.