Seathwaite, Green Gable, Base Brown

The walk, stage by stage

1. 1

   Start → Seathwaite Fell (Wainwright summit) (5.1 km, 483 m)

   Climb of about 483 m over 5.1 km (around 9% average).

   Starting from the extremely popular parking at Seathwaite farm, the route begins on the wide, stony track heading south down the valley to the iconic packhorse arch of Stockley Bridge. From here, the route begins its ascent to the high fells, generally taking the main path toward Sty Head before branching off to tackle the rugged, chaotic plateau of Seathwaite Fell. The fell itself is less of a single peak and more of a sprawling, confusing mass of rocky knolls, peat hags, and small tarns. The Wainwright summit sits at the northern end of this plateau, overlooking the Borrowdale valley you just walked up

   Waypoints

   Seathwaite Farm (approx. 120m): The valley-bottom starting point and wettest inhabited place in England. Stockley Bridge: The historic stone bridge marking the divergence of the Styhead and Grains Gill paths. Seathwaite Fell Wainwright Summit (601m): A small cairn on a rocky outcrop at the northern end of the plateau, offering the best views straight down the Borrowdale valley

   Decision point

   Valley Line of Sight: If you are unsure if you have hit the Wainwright summit, look north. The Wainwright top is the knoll that provides the most unimpeded view directly back down to Seathwaite. Styhead Gill: The deep trench of the gill runs parallel to the west, keeping you hemmed onto the plateau

   Easy to get wrong

   The Hummocky Plateau: Seathwaite Fell is notoriously difficult to navigate. The terrain is a maze of minor rock steps, deep boggy hollows, and braided sheep trods that lead nowhere. Wet Ground: Even in the height of summer, the depressions between the knolls on this plateau hold a massive amount of water. Expect wet boots

   If you need to get off

   Drop off the western flanks of the plateau to intercept the heavily engineered, foolproof Styhead Tarn path, which will lead you directly back to Stockley Bridge and Seathwaite

2. 2

   Seathwaite Fell (Wainwright summit) → Seathwaite Fell (Great Slack - Seathwaite Fell) (0.7 km, 28 m)

   Undulating section of about 0.7 km.

   This is a short, undulating traverse south across the spine of the fell to reach its true, highest point. The walking is rough and pathless in places, requiring you to weave around rocky outcrops and small, unnamed pools of water. The elevation gain is minimal, but the uneven ground demands high-stepping and constant micro-navigation

   Waypoints

   The Plateau: The trackless, undulating ground between the two summits. Great Slack (632m): The true highest point of Seathwaite Fell, marked by a cairn sitting further back towards the Great End massif

   Decision point

   Sprinkling Tarn: As you move south toward Great Slack, the massive, irregular shape of Sprinkling Tarn will begin to reveal itself in the depression ahead of you. Use it as your forward marker

   Easy to get wrong

   Clag Disorientation: In thick mist, distinguishing Great Slack from the other half-dozen rocky bumps on the plateau is incredibly difficult. Braided Paths: The lack of a single, definitive path means you must rely on terrain reading rather than just following your feet

   If you need to get off

   Do not bail east down the sheer crags into Grains Gill. If you need to exit, head due west to drop onto the Styhead path

3. 3

   Seathwaite Fell (Great Slack - Seathwaite Fell) → Green Gable (3.5 km, 367 m)

   Climb of about 367 m over 3.5 km (around 10% average).

   From Great Slack, drop south to the shores of Sprinkling Tarn, a spectacularly situated body of water beneath the looming cliffs of Great End. From the tarn, follow the rocky path west down to the major crossroads at Sty Head. Here, the route turns violently upwards, tackling Aaron Slack. This is a steep, punishing gully choked with loose red scree that funnels between Great Gable and Green Gable. At the top of the slack, you hit Windy Gap, where a short but steep rocky pull to the right (north) brings you to the summit of Green Gable

   Waypoints

   Sprinkling Tarn (276m): The large tarn sitting at the base of Great End. Sty Head (536m): The major mountain pass, marked by the iconic wooden mountain rescue stretcher box. Aaron Slack: The steep, scree-filled ravine ascending from Sty Head. Windy Gap (746m): The deeply cut col separating Great Gable and Green Gable. Green Gable Summit (801m): A rocky dome offering arguably the finest view of Great Gable’s imposing northern crags

   Decision point

   The Stretcher Box: At Sty Head, the mountain rescue box is an infallible landmark confirming you are at the correct intersection to begin the Aaron Slack climb. The Gully Walls: Once in Aaron Slack, you cannot get lost. The towering walls of the Gables box you in completely until you reach Windy Gap

   Easy to get wrong

   Aaron Slack Scree: The ascent of Aaron Slack is a miserable, lung-bursting slog. The red scree acts like a treadmill, sliding away under every step. The Windy Gap Funnel: The col is aptly named. It acts as a natural wind tunnel; winds that feel manageable on the valley floor can be ferocious enough to knock you off your feet here

   If you need to get off

   At Sty Head: This is a perfect bail point. Simply turn north and walk the well-pitched path past Styhead Tarn directly back to Seathwaite. Trap Warning: Once you are halfway up Aaron Slack, bailing is actually harder than pushing to the top, as descending the loose scree is a prime ankle-rolling hazard

4. 4

   Green Gable → Base Brown (1.4 km, 40 m)

   About 1.4 km with 40 m of ascent.

   Leaving the high rocky dome of Green Gable, the route drops steadily down its grassy northern flank into the shallow depression of Mitchell Cove. From here, it is a glorious, easy ridge walk heading north-east. The terrain transitions from shattered rock back to a broad, undulating grassy spine. The ascent to Base Brown is barely noticeable—a gentle 40m rise to reach a massive, isolated boulder that marks the summit

   Waypoints

   Mitchell Cove: The grassy saddle separating Green Gable from the Base Brown ridge. Base Brown Summit (646m): Marked by a large, perched boulder sitting right on the edge of the drop into the Gillercomb valley

   Decision point

   The Hanging Valley: Keep the distinct, bowl-like depression of Gillercomb on your left (west) as you walk the ridge. It serves as a massive topological handrail

   Easy to get wrong

   False Paths: In mist, it is easy to drift too far east on the descent from Green Gable, leading you toward the dangerous, craggy drops overlooking Styhead Gill. Deceptive Edges: The western edge of Base Brown drops vertically into the Gillercomb hanging valley. Do not stray too close to the rim in poor visibility

   If you need to get off

   There are no quick bail routes off this ridge. If the weather turns, your best option is to simply press on to Base Brown and utilize the Gillercomb descent, as retreating back up Green Gable requires unnecessary climbing

5. Base Brown → Finish (4.2 km, 21 m)

   Descent of about 529 m over 4.2 km.

   From the summit boulder of Base Brown, the path initially drops north, descending steeply into the bowl of the Gillercomb hanging valley. You must rock-hop across the infant Gillercomb Beck before the path swings right (north-east) to exit the lip of the valley. From here, the route plunges alongside Sour Milk Gill. This is an aggressively steep, heavily pitched stone staircase that threads its way down alongside dramatic waterfalls, eventually depositing you back at Seathwaite farm

   Waypoints

   Gillercomb Valley: The elevated, marshy bowl hiding behind Base Brown. Gillercomb Beck Crossing: The point where you cross the water before the steep descent begins. Sour Milk Gill: The roaring series of cascades that guide your descent. Seathwaite Farm: The finish point

   Decision point

   The Waterway: Once you cross Gillercomb Beck and hit the lip of the valley, the roaring water of Sour Milk Gill is your absolute handrail. Keep the gill on your right and follow it all the way to the valley floor

   Easy to get wrong

   Knee-Destroying Descent: The pitched path down Sour Milk Gill is unrelenting. It is a massive staircase of stone slabs that will brutalize tired quads and knees. Slippery Slabs: Near the waterfalls, the stone path is frequently coated in spray and algae, making it dangerously slick. Minor scrambling and the use of hands are required on a few steep rock steps near the bottom. Beck Crossing: In spate conditions, crossing Gillercomb Beck before the descent can be tricky and may require wading

   If you need to get off

   This is the final exit route and there is no alternative. Once you drop over the lip of the hanging valley beside the waterfalls, you are committed. Take the stone steps slowly, use trekking poles if you have them, and stay strictly on the pitched path to avoid the dangerous ravine edges