The labyrinth carvings found on the valley rock face are unique in the UK and remain of uncertain age and origin.
The valley is home to the ruins of Trewethett Mill, an 18th-century water mill that once processed textiles.
The Trevillet River creates a series of small waterfalls and cascades as it navigates the steep topography toward the sea.
The site is designated as a Site of Special Scientific Interest (SSSI) due to its unique geological features and diverse lichen species.
Rocky Valley is a dramatic river gorge in North Cornwall carved by the Trevillet River as it descends toward the Atlantic Ocean. The path follows the stream through ancient woodland before opening into a rocky coastal cove. Two mysterious labyrinth carvings, believed by some to be Bronze Age, are etched into a rock face near the remains of the Trewethett Mill. The trail traverses a mix of sheltered valley terrain and rugged cliffs with significant elevation changes. It serves as a key junction point for the South West Coast Path. The site features varied flora and is a habitat for dippers and grey wagtails. The area remains managed as a natural landscape with minimal visitor infrastructure.
The elevated ridge overlooking the river mouth where the valley transitions into the Atlantic cove.
Wear sturdy, waterproof hiking boots as the valley path becomes extremely muddy and slippery after rain.
Bring a physical map or downloaded offline navigation, as mobile signal is unreliable within the gorge.
Combine your walk with a visit to the nearby St Nectan’s Glen to see the waterfall crashing through a rock hole.
Do not attempt to scramble down the steep, unmarked cliff faces to access the shoreline, as currents are dangerous and paths are unstable.
Leave no trace; keep dogs on leads to protect local wildlife and farm livestock in adjacent fields.
