The river at this point, after some hundred yards of rapid, makes a sudden turn round a rocky angle, and plunges madly into the pool itself. Very deep water lies at the head of it, but deeper still further down on the east side, where a portion of the stream flicks back again in a swift dark backwater towards the top of the pool again. It is fishable only from the western bank, for to the east, above this backwater, a great wall of black and basaltic rock, heaved up no doubt by some fault in strata, rises sheer from the river to the height of some sixty feet. It is in fact nearly precipitous on both sides, heavily serrated at the top, and of so curious a thinness, that at about the middle of it where a fissure breaks its topmost edge, and some twenty feet from the top, there exists a long hole, a sort of lancet window, one would say, right through the rock, so that a slit of daylight can be seen through it. Since, therefore, no one would care to cast his line standing perched on that razor-edged eminence, the pool must needs be fished from the western bank. A decent fly, however, will cover it all.
It is on the western bank that there stand the remains of that which gave its title to the pool, namely, the ruins of a Pict castle, built out of rough and scarcely hewn masonry, unmortared but on a certain large and impressive scale, and in a very well-preserved condition considering its extreme antiquity. It is circular in shape and measures some twenty yards of diameter in its internal span. A staircase of large blocks with a rise of at least a foot leads up to the main gate, and opposite this on the side towards the river is another smaller postern through which down a rather hazardously steep slope a scrambling path, where progress demands both caution and activity, conducts to the head of the pool which lies immediately beneath it. A gate-chamber still roofed over exists in the solid wall: inside there are foundation indications of three rooms, and in the centre of all a very deep hole, probably a well. Finally, just outside the postern leading to the river is a small artificially levelled platform, some twenty feet across, as if made to support some superincumbent edifice. Certain stone slabs and blocks are dispersed over it.
Brora, the post-town of Gavon, lies some six miles to the southwest, and from it a track over the moor leads to the rapids immediately above the Picts’ pool, across which by somewhat extravagant striding from boulder to boulder a man can pass dry-foot when the river is low, and make his way up a steep path to the north of the basaltic rock, and so to the village. But this transit demands a steady head, and at the best is a somewhat giddy passage. Otherwise the road between it and Brora lies in a long detour higher up the moor, passing by the gates of Gavon Lodge, where I was stopping. For some vague and ill-defined reason the pool itself and the Picts’ Castle had an uneasy reputation on the country side, and several times trudging back from a day’s fishing I have known my gillie take a longish circuit, though heavy with fish, rather than make this shortcut in the dusk by the castle. On the first occasion when Sandy, a strapping yellow-bearded viking of twenty-five, did this he gave as a reason that the ground round about the castle was “mossy,” though as a God-fearing man, he must have known he lied. But on another occasion he was more frank, and said that the Picts’ pool was “no canny” after sunset. I am now inclined to agree with him, though, when he lied about it, I think it was because as a God-fearing man he feared the devil also.
It was on the evening of September 14 that I was walking back with my host, Hugh Graham, from the forest beyond the lodge. It had been a day unseasonably hot for the time of year, and the hills were blanketed with soft, furry clouds. Sandy, the gillie of whom I have spoken, was behind with the ponies, and, idly enough, I told Hugh about his strange distaste for the Picts’ pool after sunset. He listened, frowning a little.
“That’s curious,” he said. “I know there is some dim local superstition about the place, but last year certainly Sandy used to laugh at it. I remember asking him what ailed the place, and he said he thought nothing about the rubbish folk talked. But this year you say he avoids it.”
“On several occasions with me he has done so.”
Hugh smoked a while in silence, striding noiselessly over the dusky fragrant heather.
“Poor chap,” he said, “I don’t know what to do about him. He’s becoming useless.”
“Drink?” I asked.
“Yes, drink in a secondary manner. But trouble led to drink, and trouble, I am afraid, is leading him to worse than drink.”
“The only thing worse than drink is the devil,” I remarked.
“Precisely. That’s where he is going. He goes there often.”
“What on earth do you mean?” I asked.
“Well, it’s rather curious,” said Hugh. “You know I dabble a bit in folklore and local superstition, and I believe I am on the track of something odder than odd. Just wait a moment.”
We stood there in the gathering dusk till the ponies laboured up the hillside to us, Sandy with his six feet of lithe strength strolling easily beside them up the steep brae, as if his long day’s trudging had but served to half awaken his dormant powers of limb.
“Going to see Mistress Macpherson again tonight?” asked Hugh.
“Aye, puir body,” said Sandy. “She’s auld, and she’s lone.”
“Very kind of you, Sandy,” said
