This is one of the finest walks on Shetland's West Side. The Culswick road branches off the single track road between Skeld and Bridge of Walls, then forks, the left route leading to Crogran on the east side of the valley. Take the right fork into Culswick and enjoy spectacular views of the dramatic valley here, which narrows, the hills rising as they reach the cliffs. The valley floor was once a sea loch, now blocked by a shingle bar, creating a fine fresh water loch.
Shortly before the end of the road, the route to Culswick Broch begins along a track leading to the right, uphill to a small Methodist Chapel. Two peat tracks branch away from the chapel across the hill. Take the right one, which heads west and leads to past the Loch of Sotersta in the valley below. Leave all gates along this walk as you find them. In spring and summer the air here is filled with the calls of lapwing, curlew and ringed plover.
As you descend, you pass several sturdy planticrubs (plant shelters) and old kale yards, built of local stone, which is very close to the surface here. These bear witness to a time of intensive crofting in the past. At its lowermost point, the track can be very wet and muddy as it passes between high peat banks. As the track climbs again, there are glimpses of deserted Sotersta and the high sea cliffs beyond, with standing stones visible against the distant horizon.