Overview
Maghera’s headland hides more than 20 sea caves, eight arches and five tunnels cut into the base of Slievetooey, and they are only reachable when the tide is out. The beach itself is a wide sweep of white sand and dune on the northern side of the Slieve League peninsula in County Donegal, backed by big craggy cliffs and reached by a short boardwalk from the car park. It is about a 15-minute drive from Ardara, and works best as one stop on a looped coastal drive from Ardara or Glencolmcille.
Read this bit before anything else: there is a strong rip current here and no lifeguard. Maghera is one of the finest-looking beaches in Donegal and one of the worst to swim at. Come for the sand and the caves, not a dip.
The caves, and the tide
The caves are the reason to time your visit rather than just turn up. At low water the sea pulls back off the rock and opens the arches and tunnels; a couple of hours either side of high tide, they are cut off or flooded. So check a tide table first, aim to be there on a falling tide, and give yourself a clear hour before it turns. The Atlantic comes back fast across flat sand and will strand you against the cliff if you dawdle, so set a phone alarm. Bring a torch or headlamp: the deeper caves lose the daylight quickly and the rock underfoot is slick.
Folklore tells of a massacre here, with local people hiding in the caves, supposedly from Cromwell’s forces, though as the Ardara history people point out, Cromwell never came this far north, so it was more likely Vikings if it happened at all. One story has a lone survivor crawling through the caves all the way to Glencolmcille.
Wildlife
The cliffs and dunes carry more life than a quick look suggests. Sand martins nest in the soft cliff faces, six-spot burnet moths turn up in the dune grass in summer, and in spring and summer seabirds, puffins, guillemots and kittiwakes, work the ledges offshore. At low tide the rock pools fill with anemones, crabs and the odd starfish. Stay on the paths, keep off the loose dune vegetation, and keep dogs on a lead through the nesting season.
Getting there and parking
The beach is signed off the R263 from the N15 near Ardara, with the last stretch a narrow coastal lane past Assaranca Waterfall. A private car park by the farm charges €3 to €5 cash, with a toilet for 50c, and it is a 200 to 400 metre walk (10 to 15 minutes) from there down to the sand and on to the caves. If you would rather not pay, park for free at Assaranca Waterfall about a kilometre away and walk in. There are no buses, so you’ll need a car.
Nearby
- Assaranca Waterfall – a roadside cascade right on the approach lane, two minutes’ drive or a short walk.
- Slieve League – among the highest sea cliffs in Europe, about a 35-minute drive south.
- Glengesh Pass – a hairpin mountain road with long views, roughly 20 minutes away.
- Ardara – the nearest town for lunch or coffee, known for its weaving heritage; the Ardara Heritage Centre fills in the local history.
Practical information
| Item | Details |
|---|---|
| Opening hours | Open 24 hours |
| Admission | Free to the beach and caves |
| Parking | Farm car park €3–€5 cash (toilet 50c); free alternative at Assaranca Waterfall, about 1km |
| Caves | Low tide only, allow an hour before the turn; torch needed |
| Accessibility | Not wheelchair accessible; uneven dunes and rocky cave floors need sturdy footwear |
| Dogs | Welcome on leads |
| Swimming | Not advised: strong rip current, cold water, no lifeguard |
Mobile signal is patchy on the lane in, so save or screenshot the tide times before you leave the main road. Pack a windproof layer whatever the month, keep children well back from the cliff edges and out of the tunnels on a rising tide, and treat the water with respect – the view is the reward here, not the swim.