To the few who know some of the secrets of the passages, it is possible, except when a gale blows from any quarter but the north, to thread these dim arcades in a narrow boat, and so to pass from the Hebrid Seas to the outer Atlantic. But for the unwary there might well be no return; for in that maze of winding galleries and sea-washed, shadowy arcades, confusion is but another name for death. Once bewildered, there is no hope; and the lost adventurer will remain there idly drifting from barren passage to passage, till he perish of hunger and thirst, or, maddened by the strange and appalling gloom and the unbroken silence—for there the muffled voice of the sea is no more than a whisper—leap into the green waters which for ever slide stealthily from ledge to ledge.
Now, as Alan approached his remote home, he thought of these death-haunted corridors, avenues of the grave, as they are called in the "Cumha Fhir-Mearanach Aonghas mhic Dhonuill"—the Lament of mad Angus Macdonald.
When at last the unwieldy brown coble sailed into the little haven, it was to create unwonted excitement among the few fishermen who put in there frequently for bait. A group of eight or ten was upon the rocky ledge beyond Caisteal-Rhona, among them the elderly woman who was sister to Ian mac Iain.
At Alan's request, Ian went ashore in advance in a small punt. He was to wave his hand if all were well, for Alan could not but feel apprehensive on account of the strange ill-will that had shown itself at Borosay.
It was with relief that he saw the signal when, after Ian had embraced his sister, and shaken hands with all the fishermen, he had explained that the son of Ailean Carmichael was come out of the south, and had come to live a while at Caisteal-Rhona.
All there uncovered and waved their hats. Then a shout of welcome went up, and Alan's heart was glad. But the moment he had set foot on land he saw a startled look come into the eyes of the fishermen—a look that deepened swiftly into one of aversion, almost of fear.
One by one the men moved away, awkward in their embarrassment. Not one came forward with outstretched hand, or said a word of welcome.
At first amazed, then indignant, Ian reproached them. They received his words in shamed silence. Even when with a bitter tongue he taunted them, they answered nothing.
"Giorsal," said Ian, turning in despair to his sister, "is it madness that you have?"
But even she was no longer the same. Her eyes were fixed upon Alan with a look of dread, and indeed of horror. It was unmistakable, and Alan himself was conscious of it with a strange sinking of the heart. "Speak, woman!" he demanded. "What is the meaning of this thing? Why do you and these men look at me askance?"