The waterfall is formed by the River Trevillet punching a hole through the Kieve, a rock basin created by geological erosion.
The site is a designated Site of Special Scientific Interest due to its ancient woodland and rare bryophyte species.
St Nectan is historically associated with this site, with legends suggesting he rang a silver bell to guide shipwrecked sailors.
The water has a high mineral content, which contributes to the distinct coloration of the surrounding rock strata.
The riverbed contains 'kieve' formations, which are naturally occurring stone basins worn into the bedrock by swirling water and stones.
St Nectan's Waterfall is a 60-foot cascade located in a wooded valley in Trethevy, Cornwall, where the River Trevillet flows through a natural rock arch. The water has carved a hole through the floor of the upper chamber, creating a unique waterfall that flows into a circular basin. The site is situated within St Nectan's Glen, a Site of Special Scientific Interest (SSSI) recognized for its unique geological formations and rare plant life. The glen is sheltered by a canopy of trees, including ancient oaks, and is home to a diverse ecosystem of mosses and liverworts. The location is linked to local folklore concerning St Nectan, who is said to have lived in a hermitage nearby. Visitors access the falls via a woodland walk that follows the river's path through the steep-sided valley.
The viewing platform inside the main chamber looking directly up at the waterfall as it exits the rock arch.
Wear sturdy, waterproof footwear as the woodland path is frequently muddy and uneven.
Bring a waterproof jacket, as the spray from the waterfall can dampen visitors even from a distance.
Check the official website for path accessibility updates, as heavy rain occasionally leads to temporary trail closures.
Attempting the walk in flip-flops or open-toed shoes; ignoring trail markers that indicate slippery terrain.
The site remains open year-round, but access may be restricted during severe weather conditions or flooding.
Maintain silence near the waterfall to preserve the tranquil environment; do not remove stones or disturb the natural moss formations.
