The Haltwhistle Burn runs south from the line of the Wall through a wooded gully, past the site of a small Roman fort on the Stanegate, the older frontier road. This label points to one of several temporary camps near it, the overnight earthworks of Roman armies on the move. Like others in the area, it shows as a low rectangle, visible in dry summers and under low light, and not much more. The Burn itself is more rewarding, a clear stream tumbling over stones between hazel and alder, and the walk beside it takes you to a quiet corner of the valley where the sound of traffic fades.
The fort here, known to archaeologists as Haltwhistle Burn fort, belonged to the era before the Wall, when the Romans kept watch along the Stanegate between Corbridge and Carlisle. When Hadrian's Wall was built a little to the north, the older forts gradually lost their purpose. The ground around is rich in history of other kinds. At Greenhead, just to the west, Thirlwall Castle stands in ruin, built partly of Roman stone, a border stronghold of the family who held land here, and beyond it the old railway line of the South Tynedale branch carried visitors to Alston.
The region's roads suit a relaxed rider. The A69 is the fast trunk route between Carlisle and Newcastle, with its overtaking lanes and heavy lorries, while the B6318 and the minor lanes offer something slower and better. After Haltwhistle you can ride south into the Pennines on the road towards Alston, with long climbs onto the moors and open views of heather and curlews. In summer the grass verges are full of flowers. The weather can change quickly, and mist on the higher ground makes the white lines hard to see.
Haltwhistle is two and a half kilometres away, a long thin town with fuel stations, small supermarkets, a bakery and cafes. The town claims the title of the centre of Britain, and the claim is celebrated with a plaque and a good deal of local humour. Hexham, twenty-two kilometres east, has a much larger range. If you are exploring on foot, wear boots, because the burn path is muddy, and take a waterproof. Late afternoon in September, with low sun in the beech leaves, is a fine time.