The Flagstone Trail – Walk Through Caithness’s Industrial Past

Explore the legacy of Caithness’s world-famous flagstone industry on the Flagstone Trail in Castletown. This scenic and informative walk takes you through the heart of Castlehill, once a bustling hub of quarrying and stone-cutting. Follow the path from the old windmill—once used to power saws—to the historic harbour where flagstones were shipped across the globe.

Interpretive panels along the trail tell the story of how Caithness sandstone, formed 370 million years ago, became a prized building material. The walk also includes a coastal section with dramatic sea views and a woodland sculpture trail that adds a creative twist to the experience.

Good to Know – Flagstone Trail Tips

Parking: Free car park near Castlehill Heritage Centre.

Access: Open year-round; trail is self-guided.

Trail Length: Approx. 3.75 km (2.25 miles); allow 1.5–2 hours.

Terrain: Mostly well-prepared paths; woodland section may be muddy.

Start Point: Castlehill Heritage Centre, Castletown.

Extras: Visit the Castlehill Heritage Centre for exhibitions and local history.

Dog Friendly: Dogs welcome but keep on lead near livestock.

Discover the full trail details on WalkHighlands. 

Discover the history of the trail with Castlehill Heritage Centre. 

The Battery – A Coastal Lookout with Wartime History

Just a short walk from the Flagstone Trail lies The Battery, a coastal defence site that played a strategic role during World War II. Originally built to protect the northern approaches to Scapa Flow, the Battery housed anti-aircraft guns and searchlights, manned by personnel from nearby RAF Castletown.

Today, the site offers a peaceful spot to reflect on its military past while enjoying panoramic views over Dunnet Bay. Interpretive signage shares stories of wartime life and the importance of Castletown in defending Britain’s northern waters.

Good to Know – Battery Visitor Tips

Location: Accessible via the Flagstone Trail or from Castlehill Harbour.

Access: Open year-round; free to explore.

Photo Tip: Best views at sunset or during golden hour.

Wildlife: Great spot for birdwatching along the coast.

Read more about The Battery with Historic Environment Scotland.