Honister Pass
Honister Pass is one of the most dramatic and celebrated mountain passes in the English Lake District, cutting through the heart of the Cumbrian fells at an elevation of around 356 metres above sea level. It connects the Borrowdale valley to the south-east with Buttermere to the north-west, threading between the imposing flanks of Fleetwith Pike and Dale Head. The pass is significant not merely as a scenic route but as a working landscape with deep industrial heritage, most notably the Honister Slate Mine — the last working slate mine in England — which crowns the summit and draws visitors from across the world. The combination of dramatic scenery, genuine industrial history, and an array of adventure activities makes Honister Pass one of the most layered and rewarding destinations in the national park.
The history of slate quarrying on Honister dates back at least to the late seventeenth century, and the mine and its surrounding workings have shaped the physical and cultural character of the pass ever since. The distinctive Honister green slate, prized for its durability and striking colour, was used in buildings across Britain and exported more widely, extracted by workers who lived in remarkably hard conditions. In the Victorian era, men would carry slabs of slate on their backs down precipitous paths from the high quarry faces to the valley below, covering miles each day in terrain that would challenge most fell-walkers today. The mine fell into disuse at various points across the twentieth century and was eventually reopened in 1997 by Mark Weir, an energetic entrepreneur who transformed it into a working mine and tourist attraction simultaneously. Weir, who died in a helicopter crash in 2011, became something of a legend locally for his fierce dedication to keeping the mine alive; his memory is honoured at the site and his impact on its revival is considered irreplaceable by the community that grew around it.
Standing at the summit of Honister Pass is a visceral experience. The road that crosses it — the B5289 — is famously steep on both sides, with gradients touching one in four, and arriving at the top by car or bicycle you feel suddenly exposed on all sides to enormous fells and open sky. The mine buildings and slate waste heaps are immediately visible, grey-green against the darker rock, and the sound of wind is almost constant, often punctuated by the metallic creak of mine infrastructure or the distant rumble of a vehicle negotiating the valley road below. In wet weather, which is frequent here — the Lake District is one of the wettest parts of England — water streams down the fellsides in silver threads and the air carries the mineral tang of wet stone. On clear days, the panoramas are extraordinary: the ridgeline of Fleetwith Pike rises sharply to the east, while the view back down into Borrowdale reveals a deep, wooded dale framed by rounded fells.
The surrounding landscape is archetypal high Lakeland. To the north-west, descending from the pass, the narrow road drops into the Buttermere valley, one of the quietest and most beautiful in the national park, with the twin lakes of Buttermere and Crummock Water lying between steep fells. To the south-east lies Borrowdale, famous for its ancient oak woodland, the village of Rosthwaite, and eventually Derwentwater near Keswick. Great Gable and its satellite peaks are visible to the south, and the high ground of the Haystacks ridge — beloved of the writer and fell-walking authority Alfred Wainwright, who requested that his ashes be scattered there — is directly accessible on foot from the pass. The area sits within the Lake District National Park, which achieved UNESCO World Heritage status in 2017, recognising its exceptional combination of natural beauty and cultural landscape.
Honister Slate Mine offers guided tours into the mountain, taking visitors through the tunnels and chambers where slate has been extracted for centuries, explaining the geology and the extraordinary human stories behind the industry. Via Ferrata routes have been installed on the crags surrounding the mine, providing a series of fixed steel cables, ladders, and rungs that allow people without specialist climbing experience to traverse the steep rock faces with safety equipment — these routes have become extremely popular and range in difficulty from relatively accessible to genuinely challenging. There is also a zip wire operation across the crags. The mine's shop sells genuine Honister slate products, from roofing tiles to hand-finished decorative pieces, and the café provides welcome warmth on days when the weather closes in, which can happen with startling speed in this part of Cumbria.
Getting to Honister Pass is straightforward by car — the B5289 is the main route, accessible from Keswick via Borrowdale or from Cockermouth via the Lorton Vale and Buttermere — but the road is narrow and demands care, particularly on the steep final approaches to the summit from both sides. In winter, the pass can be affected by ice and occasionally snow, and it is worth checking conditions before travelling. There is a car park at the mine summit. The pass is also on the route of the popular Honister Slate Mine bus service that operates from Keswick during the summer months, providing access without a car. Cyclists tackle the climb as a classic Lakeland challenge, and the descent into Buttermere is one of the finest in the north of England. The best time to visit depends on what you seek: summer brings the most reliable weather and the full range of activities, but autumn colours in Borrowdale and Buttermere are spectacular, and even winter visits in settled conditions can offer a profoundly atmospheric experience.
One of the more unusual facts about Honister is that the mine tunnels extend deep inside the mountain, some following seams of slate at remarkably steep angles, and visitors on the underground tours gain a real sense of the three-dimensional complexity of the workings. The Via Ferrata routes are among the first of their kind to be developed in England, drawing directly on an Alpine tradition where such fixed-protection mountain routes have been common since the First World War. The slate itself has a distinctive character: the greenish hue comes from chlorite minerals within the rock, and the stone is particularly fine-grained, which is what made it so desirable historically. Wainwright, who walked virtually every fell in the Lake District, wrote with particular affection about the Haystacks ridge that rises directly from the pass, calling it his favourite place in all the fells — a powerful endorsement from a figure who spent decades exploring virtually every corner of this landscape.