This is the glacial valley no one’s heard of... Head to the South Pennines to explore both sides of this steep gulch between Burnley and Todmorden.

■Distance: 7½ miles/12km ■ Time: 3½ hours ■ Grade: Moderate

DIFFICULTY EASY DISTANCE 14KM TIME 5 HOURS ...

■Distance: 8 miles/13.1km ■ Time: 3½ hours ■ Grade: Moderate

■Distance: 5 miles/8km ■Time: 3 hours ■Grade: Moderate

■Distance: 5¾ miles/9.2km ■ Time: 3 hours ■ Grade: Moderate