Hazard: Moderate
The highest of the Far Eastern Fells, named for the Roman road that crosses its broad, grassy summit. In clear weather it is an easy whaleback walk, but the very feature that makes it gentle — a wide, near-featureless plateau — makes it one of the classic navigation traps of the Lakes in mist. The plateau is rimmed by serious crags on its eastern side above Blea Water and Riggindale, so a navigation error in cloud can lead onto genuinely dangerous ground. Mardale and Patterdale teams cover this remote fell.
- The summit plateau in poor visibility: Broad, flat and almost featureless, with few landmarks to fix on. In cloud it is very easy to walk off on the wrong bearing and end up above crags or descending into the wrong valley. Take a compass bearing before you leave the summit and trust it — don't navigate by the vague feel of the slope.
- Long Stile / Rough Crag (Riggindale) edge above Blea Water: The eastern rim drops in steep crags to Blea Water, the deepest tarn in the Lakes. The Long Stile ridge is the narrow, craggy crest along this edge. Keep well back from the lip in wind or mist; the ground that looks like a continuation of the plateau ends abruptly in cliffs.
- Winter conditions on the plateau and edges: In winter the plateau holds snow and offers no shelter or reference points, and cornices and ice form along the crag edges above Blea Water. Whiteout navigation here is genuinely serious — full winter skills, ice axe and crampons needed, and extra margin kept from the corniced edge.
Who should attempt this fell: Treat High Street as a navigation fell first and foremost. On a clear day the walking is easy; in cloud the flat, open top defeats people who could handle far rougher ground. Be confident with map, compass and bearings before you commit, especially for the leg off the summit. It is a long way from a road in every direction, so allow time and carry proper kit. In winter it demands full winter competence.
What to watch for: Navigation errors in cloud on the featureless summit plateau · Walkers drifting onto the crags above Blea Water / Riggindale · Whiteout disorientation and corniced edges in winter · Underestimating the remoteness and long walk-out from any direction
Local Mountain Rescue: Patterdale Mountain Rescue Team (opens in new tab)
Safety: Always check current conditions, carry proper navigation equipment, and seek qualified instruction before heading onto the fells. In an emergency, call 999, ask for Police, then Mountain Rescue.
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