Deep Cave Exploration at Cove Harbour – A Borderland Mystery

We return to Cove harbour to enter the seemingly endless cave which some believe runs all the way to the village of Cockburnspath.…

But what was the cave for, did smugglers use it, and can we make it all the way through

(Warning contains some bad language)

On the rugged east coast of the Scottish Borders lies the remote and windswept Cove Harbour—a place of haunting beauty, steeped in mystery and history. A man, fuelled by six months of curiosity and knee-aching determination, returns to the scene of his last adventure: a series of caves carved deep into the ancient cliffs. One cave had already revealed itself as a vast, eerie tunnel leading to a cavernous chamber—but the second, tighter, darker tunnel remained unexplored… until now.

Armed with only a headtorch and some grit, he set out again—dodging slippery rocks and the ever-looming North Sea—to find the second cave: a barely-visible opening, easy to miss and hard to forget. This was no leisurely stroll along the beach; this was a crawl through tight stone corridors, pushing past spider webs the size of dinner plates and squeezing through near-suffocating passageways.

Theories abound about what these tunnels were for: were they part of Scotland’s storied smuggling routes, hidden passageways for contraband in the 18th and 19th centuries? Or were they utilitarian—mining tunnels, seaweed transport routes, or even, as some suggest, a passage all the way to Cockburnspath village?

Inside, the second tunnel felt even more claustrophobic than expected—long, narrow, wet, and seemingly endless. Eventually, it reached a flooded section and the journey had to stop. But the mystery? It only deepened. What is this tunnel? Where does it go? Why was it built with such intent and effort?

What’s undeniable is the sheer atmosphere of this coastline. The rock faces are alive with geological drama, and the tunnels echo with a sense of forgotten purpose. The challenge remains open—to anyone brave enough (and limber enough) to crawl its full length and finally answer the question: Where does the tunnel lead?

Warning: Tight spaces, spiders, cold walls, and a genuine sense of awe await. Not for the faint-hearted.