The Gloup
The Gloup is a dramatic sea geo — a long, narrow inlet carved into the cliff tops of the northern coast of Hoy, one of the Orkney Islands in northern Scotland. The name itself derives from the Old Norse word "glúpr," meaning a chasm or deep gulch, and it perfectly describes what visitors encounter: a violent collision between the restless North Atlantic and the ancient red sandstone of Hoy's rugged coastline. The Gloup is essentially a collapsed sea cave, where centuries of wave action have eroded the rock from beneath until the roof gave way, leaving a thundering trench open to the sky. It is a place of extraordinary raw power and geological drama, and it stands as one of the more viscerally impressive natural features in a landscape already crowded with remarkable sights.
The formation of The Gloup is a story written over thousands of years by water and stone. The sea caves that eventually collapsed to create it were themselves the product of persistent Atlantic swells attacking the weaknesses and fault lines in the Old Red Sandstone that makes up most of Hoy. As the roof of the cave thinned and fractured, it eventually fell, and the resulting geo now functions as a kind of natural amplifier for the sea. On rough days, water surges through the connecting tunnels and passages that still run beneath the surrounding clifftop, and jets of spray explode upward through the opening with a deep, resonant booming sound. Local tradition has long given such places a sense of foreboding, and the lonely, windswept atmosphere of the site no doubt lent itself to generations of folklore on these islands.
In person, The Gloup is intensely atmospheric. The approach across the heathery moorland of northern Hoy does little to prepare a visitor for the sudden chasm that opens in the ground before them. The walls of the geo drop steeply to where churning green and white water swirls and surges below, and the sandstone layers are beautifully exposed in section — rich reds, oranges and purples stacked in horizontal bands that record ancient desert environments from the Devonian period, around 380 million years ago. The sound is part of what makes it memorable: even on relatively calm days there is a persistent deep groan and rush of water through the sea passages beneath, and when the swell is high, the noise becomes something close to a roar. The salt air is sharp and clean, and seabirds wheel overhead.
Hoy itself is one of the most dramatic of the Orkney Islands, distinctly different in character from the low, fertile farmland of the Orkney Mainland. It is hillier, wilder, and much more sparsely populated, dominated by the moorland plateau of Ward Hill — the highest point in Orkney — and by the extraordinary sea stacks and cliffs of its western and northern coasts. The most famous nearby landmark is the Old Man of Hoy, the towering sandstone sea stack that has become an icon of Scottish scenery. The Gloup sits on the northeastern tip of the island, in a quieter and less frequently visited corner than the Old Man, which lends visits a quality of solitude and discovery. The coastline nearby is ragged and spectacular, with further geos, stacks, and cliff features visible in both directions.
Reaching The Gloup requires some commitment, which is part of its appeal. Hoy is accessible by ferry from Houton on the Orkney Mainland or from Stromness, and the island has extremely limited public transport, so most visitors either walk or bring a vehicle on the ferry. The northern part of Hoy around Rackwick and the Old Man is more commonly visited, but The Gloup in the far northeast requires a walk across open moorland from the small settlement of Rackwick or from the direction of the pier at Moaness. The terrain is rough in places, and the ground can be boggy after rain. Visitors should take care near the edge of the geo, as the cliff top can be unstable and there are no safety barriers. The site is unwalled and open at all times, free to visit, and is at its most impressive during periods of Atlantic swell and strong westerly or northerly winds.
The Gloup is a reminder of how geologically young and dynamic the Orcadian coastline remains. The same processes that created it are ongoing — the cliffs continue to retreat, new caves are forming, and eventually other collapses will reshape this coastline further. For anyone with an interest in geology, coastal geomorphology, or simply wild and elemental places, it represents an exceptional destination. The Norse settlers who named it clearly felt its power strongly enough to name it plainly after what it was: a chasm. In that directness there is something fitting, because The Gloup does not need embellishment or mythology. It announces itself entirely through what it is.