The is quite a well-known route, and is even marked on OS maps, though the waymarking is a little hit-and-miss in places so we thought it would be worth writing a comprehensive set of directions for. It is a circular walk of just over 5 miles around the river valleys surrounding St Neot which we grade as moderate to strenuous as there are some steep climbs.
The route starts at the St Neot village car park and passes through the centre of the village, crossing the river. The were once a number of mills powered by the river. The Town Mill is still evident from the millstones propped up against it, and the granite blocks that once held the timber frame to support the huge wooden cogs inside the mill. There is also a curious stone imprisoned in the wall opposite. This is a mortar stone that ore was crushed against within a "blowing house" that once stood behind the mill. The name arises as the waterwheel was used to drive bellows for a furnace to smelt the tin ore. Charcoal was produced in the woods nearby for the smelting process.
The route continues towards the church, passing the lane to the Holy Well, then climbs up to the moorland of Berry Down via small lanes and footpaths.
After crossing the moor, the walk descends into the river valley through broadleaf woodland (with nice bluebells in spring) and follows the wooded path along the top of a ravine.
The route follows the river close to its confluence with the Fowey and follows the River Fowey to Treverbyn.
There is a mediaeval bridge just off the route which was built on behalf of church by the locals in return for an amnesty on their sins.
The return route is via small lanes and tracks, ending at the Church and London Inn.
The walk is available as a guided walk app for Android and also available in the iWalk app for iPhone.
Other circular walks nearby include one from Golitha Falls to Trethevy Quoit and The Cheesewring and South Pheonix Engine Houses from Minions.