Posforth Gill Force is a waterfall tucked within the Valley of Desolation in the Yorkshire Dales, near Bolton Abbey. The valley takes its dramatic name from a devastating storm in 1826 that tore through the area.

The falls flow along Posforth Gill Beck through a wooded gorge, slightly set back from the main path, giving the spot a secluded, peaceful character.

The waterfall is accessible from the Cavendish Pavilion and is a relatively short walk from Bolton Abbey, making it suitable for walkers of most abilities.

It is commonly combined with visits to nearby landmarks such as The Strid, a notoriously dangerous narrow stretch of the River Wharfe, or extended into a longer route taking in the summit of Simon's Seat.