The valley is home to the rare High Brown Fritillary butterfly, which relies on the specific scrubland and bracken habitats maintained here.
Heddon's Mouth is a natural feature created by the erosion of the cliff face where the Heddon River meets the Bristol Channel.
The area contains remnants of ancient woodland that date back to at least the 1600s.
The valley was once the site of a lime kiln, reflecting historical local agricultural and industrial use.
It is often referred to as one of England's highest cliff coastlines, with dramatic elevation changes near the sea.
The landscape is designated as part of a Site of Special Scientific Interest (SSSI).
Heddon Valley is a remote coastal gorge located within the Exmoor National Park on the North Devon coast. The Heddon River flows through a deep, wooded valley before reaching the sea at Heddon's Mouth beach. The site features a pebble beach protected by high cliffs and rocky outcrops. It serves as a significant habitat for the rare High Brown Fritillary butterfly. Visitors can access a network of paths that connect the valley floor to the South West Coast Path. The area is part of the National Trust's land management efforts to preserve ancient semi-natural woodland. The local landscape includes steep-sided slopes and temperate rainforest characteristics. It remains one of the least developed sections of the Exmoor coastline.
The elevated view from the cliff path looking down toward the river mouth and pebble beach.
Wear sturdy, waterproof hiking boots as trails are frequently uneven, steep, and can be muddy.
Bring binoculars if visiting in summer to spot rare butterfly species along the valley edges.
Carry a physical map as mobile phone signal is highly unreliable or non-existent in the valley floor.
Attempting to swim at Heddon's Mouth, as the beach has strong currents and dangerous hidden rocks.
Car park and paths remain open year-round, though some facilities may close during winter months.
Keep dogs on leads due to livestock and sensitive cliff-side habitats; follow leave-no-trace principles.
