His reputation was spoken of highly by good people – Mary McFadden, former headmistress and organizer of the lively ceilidh dances at Teac Jack’s and John Curran voluntary sector leader and aspiring politician. There seemed no-one better to uncover the anthropological and natural wonders of west Donegal for us than this fellow.

So that’s how my wife, Columbia, our two small sheepdogs, Siog (‘fairy’ in Irish) and Lugh (who, according to Celtic legend, slew Balor of the Evil Eye) and myself ended up cowering for dear life under the branches of chubby furze bush as hailstones the size of a rabbit’s droppings – though much, much, much harder – pummeled down on us mercilessly from above.

But the drenching we got was worth the wetting (and sure didn’t the sun break out just a few minutes later as if to reassure us we’d be dry soon). For that’s how we got to know about flesh-eating plants, soaring eagles, Pagan wishing stones and Colmcille’s guide to the joy of sex all along the newly-Christened ‘Wild Atlantic Way.’ And many’s another thing that’s in Seamus Doohan’s head about our wee area tucked away in the far corner of this, the Forgotten County.

An electrical contractor by trade, the jolly, bald-headed 48-year-old became fascinated by the immense diversity of natural and anthropological features around him in his native Gaeltacht area of Cloughaneely after he participated in a sports endurance charity event for cancer victims three years ago. There and then he decided to study the local flora, fauna and history in greater depth and to launch a guided walks and navigation service, Walking Donegal, as an added attraction for visiting tourists and for local people. So far, he has taken several hundred on tours, including visitors from countries as diverse as Italy, the US and Japan, as well as guided walks with the Errigal Arts Festival and for schools.

“We are spoiled for landscape choice in west Donegal, with such a wealth of intricate and colourful plant species and a fascinating history dating back to the time of primitive man and Pagan worship, not to mention the Christian era that came afterwards,” he said.  “There is something mysterious and magnetic about the mountains around us here, with so many routes for walkers of all ages and aspirations.”

Seamus’s walks, which include forest, island, hill and beach, range in duration from one to five hours and are graded 1 through 5 in terms of difficulty, from flat terrain to challenging gradients. They traverse places such as Horn Head, Ards Forest Park, Sli an Earagail, Dunlewey Glen, Tory, Innisboffin and Arranmore, as well as the Joey Glover Challenge, a walk from Muckish to Errigal “taking in all the mountains in between.”

Halting momentarily on the way up rolling fields to Lough Altan near Errigal, Seamus suddenly bends down and parts some blades of grass. Hidden beneath is a tiny plant with a vivid red head. ‘Devil’s matchstick, or cladonia cristatella,” he says, then points to a spot a few feet away. “And over there, some Devil’s chalices.”

Running his fingers over a spread of soft lime-green moss, he adds, “Sphagnum. During the First World War there was a shortage of bandages and they used this to stem the flow of blood, especially from bayonet wounds. But there are a hundred other varieties.” He swings round on his hunkers to gaze at a small plant with what looks like a set of animal horns on top. “That’s staghorn. And there’s club and fern over there. Beside them, that’s bell and ling heather. You can dry their flowers and make healthy herbal teas out of them.” Turning again, his eyes searching closely, he adds, “There’s some tormentil flowers. They’re yellow in summer, natural antiseptic to ease toothaches. And there, sundew plants. They’re carnivorous, the glands on their leaves emit a sticky gel to traps insects. They then eat them to supplement the poor mineral nutrition of the soil in which they grow.”

Further along, by the side of an old pony and cart track used more than a hundred years ago to get to Altan Farm, he stops again, this time beside a strange rock formation that resembles the open pages of a book.  “I call this ‘leabhar cloch Cholm Ciolle’ (Colmcille’s book of stone). It’s believed the monk, who would have wandered these hills, secretly copied a mysterious text. Who knows? This could be it – magically petrified.” Somebody nearby says the book in question was probably ‘The Joy Of Sex” – a particularly delightful illustrative book that helped enlighten me greatly in the face of strict Catholic doctrine on the sacrosanct subject. But Seamus rightly ignores my nostalgic ramblings. And rambles on up the hill.

Below in the sunshine, the ruins of a once sturdy, castle-like structure stands at the head of the lough, still defying the elements after all these years. To our left a herd of deer dart away on to higher ground while above us two eagles glide effortlessly, on the sharp lookout for unwary prey.

Later, up a steep climb behind Gortahork, Seamus, who is secretary and training officer of the North West Mountaineering Club, points to two round indentations carved out of bare stone, resembling an alien’s head. “Cup or ring marks, prehistoric art,” he says. “Sometimes known as wishing stones in Pagan times. Supposedly the water that gathers in them heals warts, thus the Gaeilge name, Tober na bhFáithní (the Wart Stone). ”

Out at Ray, he stops at a ruined church and flat run of fields beyond, “This is known as ‘Lag na gCnámh,’ the resting place of bones, after a massacre that occurred here in the 17^th century,” he ssays. “No-one knows exactly where the bodies are but there’s a lot of them under this soil somewhere.” In a hillside graveyard outside Falcarragh, he stands in the wind and rain, gazing east, “Amazing to think that druids long ago in their big, flowing cloaks stood right here with this amphitheater of hills in front of them and prayed to Nature.”As he spoke and the hailstones started pouring down again, I wondered if he might just take on the role, burst into a chant and invoke the Sun God to smile upon us.