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England
At over 3.4km, the longest stone row in Europe, running across southern Dartmoor. A processional way of small stones linking a cairn circle to the River Erme.
7 min read · 1,572 words · Updated February 2026
On the southern flanks of Dartmoor, a line of stones runs from the bank of the River Erme at Stall Moor northward up the hillside to a cairn on Green Hill, covering a distance of approximately 3.4 kilometres. It is the longest stone row in the world.
That claim requires a moment's consideration. There are stone alignments in Brittany that extend over longer distances, most notably the Carnac alignments, but these consist of multiple parallel rows. As a single continuous row of stones stretching from one point to another across the landscape, the Stall Moor row is unmatched. It runs for over two miles across open moorland, climbing from the river valley at about 300 metres altitude to the summit of Green Hill at approximately 460 metres, gaining 160 metres of elevation in a line that is remarkably straight given the terrain it crosses.
The row contains an estimated 1,028 stones, though counts vary depending on which small and partially buried stones are included. Most of the stones are small -- between 15 and 50 centimetres tall -- and many are barely visible above the turf and heather. This is not a monument of grandeur but of persistence. Stone after stone after stone, set at intervals of a few metres, marking a line across the moor that was important enough to justify the labour of placing over a thousand pieces of granite into the earth across a distance that takes a fit walker nearly an hour to cover.
The row begins at a point near the River Erme, on the low-lying ground of Stall Moor. Its southern end is associated with a cairn circle -- a small ring of stones surrounding a burial mound. From this starting point, the row climbs northward, ascending the gentle slopes of the southern moor in a line that trends approximately south-southwest to north-northeast.
The terrain it crosses is classic Dartmoor upland: rough grass, heather, bog, and scattered granite. The ground is often waterlogged, particularly in the lower sections near the river, and the route crosses several small streams and boggy areas. In places, the stones are partially submerged in peat and sphagnum moss, visible only as slight bumps in the surface of the bog.
As the row climbs, the landscape opens. The views extend southward toward the coast and westward across the rolling moorland. The stones become slightly more prominent on the higher ground, where drainage is better and peat accumulation is less, but they remain modest in scale. This is not a monument designed to impress by the size of its individual components. Its power lies in its extent, its relentless continuity, its refusal to stop.
At its northern end, the row terminates at a cairn on Green Hill (also known as Stalldown Barrow). This is a substantial Bronze Age burial cairn, roughly 12 metres in diameter, sitting at one of the highest points in the immediate landscape. The row runs directly to the cairn, leaving no doubt that the two monuments are related -- the row leads to the burial, connecting the river below with the dead above.
| Feature | Detail |
|---|---|
| Total length | c. 3.4 km (2.1 miles) |
| Number of stones | c. 1,028 |
| Stone heights | Mostly 0.15--0.5 m |
| Southern terminus | Cairn circle near River Erme (c. 300 m altitude) |
| Northern terminus | Cairn on Green Hill (c. 460 m altitude) |
| Altitude gain | c. 160 m |
| Alignment | Approximately SSW--NNE |
Dartmoor is the heartland of the British stone row tradition. Over seventy stone rows have been identified on the moor, far more than in any other region of Britain or Ireland. They range from short single rows of a few metres to the extraordinary length of the Stall Moor row. Most are single rows, though double rows (two parallel lines of stones) are also common, and a few triple rows exist.
The Dartmoor stone rows share several common features:
The Stall Moor row is exceptional in its length but not in its character. It is the fullest expression of a tradition that is found across Dartmoor, a tradition of marking lines across the landscape with small stones, connecting places of burial with places of the living, creating paths between the everyday world and whatever lay beyond.
The Stall Moor row has not been subject to extensive modern excavation, but its dating can be inferred from the broader context of Dartmoor's stone rows. Excavated examples elsewhere on the moor have produced dates in the Early to Middle Bronze Age, roughly 2000 to 1500 BCE. The associated burial cairns, where dated, fall in the same range. The row was almost certainly constructed during this period, when Dartmoor's uplands were extensively settled by farming communities.
The purpose of the row is, like all Dartmoor's stone rows, a matter of interpretation rather than certainty. Several hypotheses have been proposed:
Funerary processional route. The row's connection between a riverside cairn circle and a hilltop burial cairn strongly suggests a funerary function. The row may have defined the route along which the dead were carried from the settlement areas near the river to their final resting place on the summit. The uphill direction -- from river to hilltop, from low ground to high -- may have carried symbolic weight: an ascent from the world of the living to a place closer to the sky, the sun, or the realm of the ancestors.
Territorial boundary. Some researchers have suggested that stone rows marked boundaries between different communities' territories. The Stall Moor row's great length and its course across the landscape could support this interpretation, though the presence of burial cairns at both ends complicates a purely practical boundary function.
Astronomical alignment. The row's roughly north-northeast alignment has been examined for astronomical significance. Some researchers have noted approximate alignments with stellar rising points or solar positions, but the evidence is not compelling. The alignment may be determined more by the topography -- the row runs from the river to the nearest prominent hilltop -- than by celestial observations.
The most persuasive interpretation remains the funerary one. The row connects two burial sites across 3.4 kilometres of moorland, climbing from river to summit. It is a path for the dead, a processional route marked in stone, maintained and extended over generations.
Walking the Stall Moor stone row is one of the great experiences of Dartmoor archaeology, but it is not a casual outing. The route crosses rough, open moorland with no paths, no waymarking, and no facilities. Much of the ground is boggy, particularly in the lower sections near the River Erme. Waterproof boots are essential. Navigation skills and an Ordnance Survey map (Explorer OL28, Dartmoor) are strongly recommended.
The most common approach is from the south, starting at the car park at the end of the minor road from Harford. From here, a walk of approximately 2 kilometres across the moor brings you to the southern end of the row near the River Erme. You then follow the row northward uphill to Green Hill -- a walk of 3.4 kilometres that typically takes 1 to 1.5 hours, depending on conditions.
| Detail | Information |
|---|---|
| Access | Open access land; free; 24 hours |
| Start point | Car park at end of road from Harford |
| Grid reference (south end) | SX 6340 6420 |
| Grid reference (north end) | SX 6360 6690 |
| Total walk distance | c. 8--10 km round trip |
| Terrain | Rough moorland; boggy; no formal paths |
| Dogs | Welcome; livestock on moor |
| Facilities | None; nearest village is Harford |
| Note | Parts of the area are within the Dartmoor military firing range; check range firing times before visiting |
The row is subtle. For much of its length, the stones are barely visible, and you find yourself scanning the ground ahead for the next small upright stone, then the next, then the next. It is a slow, meditative experience -- a walk that requires attention and rewards patience. The act of following the row, stone by stone, across kilometres of open moor, gives you a physical understanding of the monument's scale that no photograph or description can convey.
At the summit of Green Hill, beside the cairn where the row ends, stop and look back. The moorland falls away to the south, the Erme valley a distant crease in the landscape, the coast a suggestion of light on the horizon. The line of stones is invisible from this distance -- you cannot see individual stones at 3.4 kilometres -- but you know it is there, because you have just walked it. A thousand stones, set one by one into the peat, marking a line that has endured for four thousand years. Whatever it meant to the people who built it, the commitment it represents is unmistakable.
Published by The Greene Man · Last updated 28 February 2026
Grid Reference
50.4450°N, 3.9208°W
Other sites to explore in this region.
One of the last remnants of ancient upland oakwood on Dartmoor. Gnarled, moss-draped dwarf oaks growing from a clitter of granite boulders — utterly primeval.
Double stone rows, a stone circle, standing stones, and cists on Dartmoor — a complete prehistoric ceremonial landscape on the open moor.
A well-preserved Bronze Age enclosed settlement on Dartmoor, with a massive boundary wall and the remains of 24 hut circles. One of the finest prehistoric settlement sites in southwest England.
A double stone row running across the high moorland of Dartmoor near Chagford. Part of a Bronze Age ritual landscape with cairns and cists.