The stream starts life high up on Venn Down, 820ft (250m) above sea level. From there it meanders through fields before tumbling dramatically, first at the waterfalls at St Nectan’s Glen, then through rocky bluffs and deep clefts all the way to the open ocean in the bay near Bossiney. Grade of walk: Trainer (all rounder); type of walk: 'Waterside Walks', 'Hidden Places'.