This must be one of the most dramatic sights on the Isle of Man, but there is little information about it. It has always been popular with tourists and the derelict roofless building was once a cafe.
Set above the cliffs to the south of Port St Mary, this is an area of sandstone which dips towards the sea and has suffered from slippage. This has resulted in the sandstone breaking into into large blocks separated by deep fissures. These vary from a few inches to several feet across and are very deep.
The area is fenced off and there are warning notices about keeping to the path as some of the fissures are deep and wide enough to completely swallow you up, never to be seen again…. In summer they are overgrown with heather. This is not a place to let children or dogs run free!
You have to “walk”:https://www.visitisleofman.com/things-to-do/activities/walking-and-hiking/self-guided-walks/railway-ramble-port-st-mary-the-chasms-cregneash-port-erin-p1299521 to find these. It is a lovely walk along the cliffs from The Sound over Spanish Head, or from Port St Mary. Alternatively take the road out out Cregneash which climbs up over the ridge and drops down to the Chasms.
The nearest post code is IM9 6HL and the grid reference is SC192 664.