Craignethan Castle Walk
This walk visits Craignethan Castle near the village of Crossford in South Lanarkshire.
You'll also visit the Lower Nethan Gorge Nature Reserve which lies just a short walk to the east of the castle. As such the route offers a mix of history, scenic beauty, and a chance to immerse yourself in nature.
There is a car park next to the castle where you can start your walk. From here you can explore the well-preserved keep, courtyard, and the remains of its once-formidable artillery defences while enjoying views over the surrounding countryside.
From the castle, the walk leads down into the enchanting Lower Nethan Gorge, part of the Clyde Valley Woodlands and a designated Site of Special Scientific Interest (SSSI) due to its rich biodiversity and striking geological features. This ancient gorge, carved by the River Nethan, is blanketed in semi-natural woodland dominated by ash, oak, and wych elm. In spring, the woodland floor comes alive with wildflowers such as bluebells, ramsons, and wood anemones, creating a carpet of colour and fragrance.
The Clyde Walkway runs just past Crossford. You could pick up this shared walking and cycling trail to continue your outing.
Craignethan Castle Ordnance Survey Map 
- view and print off detailed OS map
Craignethan Castle Open Street Map 
- view and print off detailed map
Craignethan Castle OS Map 
- Mobile GPS OS Map with Location tracking
Craignethan Castle Open Street Map 
- Mobile GPS Map with Location tracking
Cycle Routes and Walking Routes Nearby
Photos
Craignethan Castle, Lanarkshire. Craignethan was built in the 1530s by Sir James Hamilton of Finnart, a prominent figure of the Scottish Renaissance and an expert in artillery fortification. The castle was designed as a stronghold against emerging military threats, with innovative defences that were advanced for their time. Its history includes a tumultuous period during the Wars of the Covenant in the 17th century, and parts of the structure were deliberately dismantled to reduce its strategic value.
Craignethan Castle - outer wall
Footpath to Nethan Gorge. The gorge is a haven for wildlife, and walkers may spot roe deer and red squirrels in the woods or catch glimpses of otters in the river. The birdlife is abundant, with species such as dippers, kingfishers, and grey wagtails frequently seen along the water. Buzzards and sparrowhawks are often seen soaring overhead, while the dense woodland provides shelter for smaller songbirds like blackcaps and willow warblers. The river itself supports a healthy population of trout and other aquatic species.
Nethan Gorge woodlands. The walk through the gorge follows undulating paths that can be uneven and muddy, especially after rain, so sturdy footwear is recommended. As you navigate the trails, you'll encounter dramatic views of the steep-sided gorge and the serene flow of the River Nethan below, all set within a tranquil and secluded environment.