CHAPTER III

GREENWOOD SENIOR'S DISCOVERY

Early on the following afternoon a train in connection with the night express for King's Cross arrived at Auldhaig station from Edinburgh.

Amongst the passengers were Mr. Theodore Greenwood and his daughter Doris. The former's object in making the long and tedious journey from Devonshire to the bleak north-east coast of Scotland was twofold. He wanted to hand his daughter over safely to the Naval Hospital—and this in spite of the nineteen-year-old young lady's assurances that she was quite capable of travelling alone. He also thought that there might be a possibility of seeing Eric, since he knew that the "Pompey's" base was at Auldhaig. Notwithstanding the fact that the Assistant Paymaster R.N.R. had studiously adhered to the regulations and had made no mention of where the ship was or what she was doing, that information had been forthcoming.

Nor was Mr. Greenwood alone in the possession of the supposed secret, for already several of the officers' wives and families had braved the rigours of the wintry climate and had taken either furnished houses or apartments in the town, which since the war had developed out of all knowledge.

Having duly rid himself of his responsibility of handing Doris over to the Head Nursing Sister, Mr. Greenwood set out on his quest for H.M.S. "Pompey." Being naturally of a somewhat nervous disposition, he hesitated to ask if the cruiser were in harbour, reflecting that such a question might lead to his arrest as a spy. In his imagination he fancied that everyone he met eyed him with suspicion.

At length he arrived at the shore of an arm of the intricate harbour. Lying at moorings in the channel were half a dozen destroyers, but there were no signs of any vessel approaching the armoured cruiser in tonnage.

For some moments he stopped to read a notice-board on which was set forth a list of things that the inhabitants of Auldhaig must or must not do, the document being signed by the senior naval officer of the port.

"There's nothing like taking every possible precaution," murmured Mr. Greenwood approvingly. "One cannot be too particular in wartime."

Just then an old fisherman sauntered by. To him the stranger addressed himself, inquiring if he knew whether the "Pompey" was in harbour.

The old Scot shook his head.

"I dinna ken what you say, mon," he said.

Mr. Greenwood repeated his question.

"Oh—ay. Weel, tak yon path——"

He gave his questioner lengthy and bewildering directions which not only left the Devon man completely tied up in knots, but with also a reply to a misunderstood question, for the old man had come to the conclusion that Mr. Greenwood was asking the way to Ponhaugh, a small fishing-village about four miles from Auldhaig by the cliff-path.

Gaining the outskirts of the town, Mr. Greenwood commenced the long climb to the edge of the rugged granite cliffs. From the moment he struck the open country he did not see another person of whom he might make further inquiries, but with complete reliance upon the old fisherman's directions he walked briskly along the narrow, winding path.

This he followed for nearly two miles without finding any signs of his quest. Instead, he made the disconcerting discovery that the track split into two parts, one branch trending inland, the other descending steeply to the beach.

Mr. Greenwood took the latter route. Upon gaining the shore he found that the track ended at the firm sands that fronted the base of the rugged and indented line of cliffs.

Undaunted, he proceeded, expecting as he rounded each projection to find the non-existent harbour in which he supposed H.M.S. "Pompey" to be lying; but headland after headland was passed without any satisfactory result.

Presently he arrived at a little bay. The distance between the two enclosing promontories was less than a hundred yards apart. The shore was of sand, but, unlike the rest of the beach, was interrupted by a series of low ledges of rock. Between the water's edge and the base of the cliffs the distance averaged twenty yards, although the waves were almost washing the wall of granite at either end of the bay.

Suddenly Mr. Greenwood caught sight of a cylindrical object lying on the shore. It was a little larger than a football and glistened in the dull light. At every undulation it was flung upon the sand, whence it receded in the undertow until thrown back by the succeeding wave. Attached to it was a short length of frayed rope.

"That must be a mine," decided the alarmed man. "The authorities must be informed."

Although half inclined to retrace his steps, he walked cautiously past it, keeping as close to the cliffs as possible, until he gained the furthermost headland. Here, to his dismay, he found the distant aspect was a misleading one, for his progress was barred by a deep gulley through which the tide was surging right up to the wall of granite.

"I hope the tide is going down," thought Mr. Greenwood.

To satisfy his curiosity on that point he wasted ten precious minutes, only to be ocularly assured that the tide was on the flood, and that there was no possible chance of going further.

Again he passed the cylindrical object. By this time it was within a few feet of one of the ledges of rock.

"When the waves throw it against those rocks it will explode," commented Mr. Greenwood. "How dangerous! Thank goodness I have yet time to put a safe distance between me and that infernal machine."

Thirty seconds later he "brought up all standing." Where a short time previously had been an expanse of hard sand, the waves were lapping against the cliff. His retreat was cut off.

Even then, at the expense of wet feet, he might have negotiated the passage, since the water was only about a foot or eighteen inches in depth; but Mr. Greenwood hesitated and, figuratively, was lost.

Step by step he retreated before the rapidly rising tide, each step taking him nearer again to the object of his apprehension. A belt of seaweed rising six or seven feet from the sand marked the limit of mean high tides on the face of the cliffs. It was evident that nowhere within the arms of the bay was safety to be found except by scaling the frowning precipice.

Discarding his umbrella—he wedged it tightly into a crevice in the granite in the hope that he might be able to retrieve his trusty friend—Mr. Greenwood sought for a suitable spot at which to commence his hazardous feat. At the same time he kept an anxious watch upon the derelict mine, which, having escaped being cast upon the ledge, was now being carried close to the main wall of rock.

In his heated imagination he fancied himself fifty or a hundred feet up the cliff with the powerful explosive going off and hurling him to a terrible death upon the rocks beneath. He shouted, but only the echoes of his own voice mocked his appeal for aid. In vain he looked seaward, where the mists of evening were already creeping over the wild North Sea. Not a sail was visible.

Mr. Greenwood was one of those men who, by disposition timid and unassuming, possessed a great reserve of courage and determination when called upon to extricate themselves from a tight corner. And, having found himself in a tight corner, he acted accordingly.

After a brief search he discovered a rift in the cliff, which at this point was not so sheer as it appeared at first sight. In any case the footholds obtainable extended sufficiently high to enable him to climb above high-water mark. Here he could wait until the tide fell and take his chance with the mine.

The first six feet gave him great trouble, for the weed and kelp afforded little foothold, but beyond this height he was able to maintain a steady progress. Up and up he climbed, not daring to look down, although the attraction of that deadly cylinder was almost irresistible. He wanted to watch its progress towards the base of the solid rock.

At length, fifty feet above the sea, he gained a fairly broad ledge, the presence of which was invisible from the beach. Nor could it be seen from the top of the cliffs, for higher up they projected well beyond the ledge, the face being so smooth that further climbing was a matter of sheer impossibility.

"At any rate, I am safe for the time being," soliloquised Mr. Greenwood. "That is something to be thankful for, although I would infinitely prefer the comfort of a bed to the prospect of spending a winter's night less than halfway up a wall of rock. And even if that mine explodes I think this ledge will provide sufficient protection to minimise the force of the detonation."

Cautiously extending himself, he peered over the edge. In the fast-gathering gloom he could just discern the mine as it rolled to and fro on the shelving sand. The waves had almost borne it to the base of the rocks.

A new danger now confronted the stranded man. Perilous as the climb had been, the descent was doubly dangerous. When the time came, he could no more essay the feat of regaining the beach than he could hope to clamber up the remaining two hundred feet of beetling cliff. Unless aid were forthcoming, he was in danger of perishing of cold and hunger.

Mr. Greenwood's next step was to prepare for his approaching vigil while there was yet light enough for him to see. The ledge was almost twelve feet in length and five in its widest part, gradually diminishing to nothing at either end. One portion was covered by a withered bush, a circumstance that aroused the investigator's curiosity, since it seemed remarkable that vegetation could grow on the face of a granite cliff.

"Thank goodness I have pipe, matches, and tobacco," he thought philosophically. Now that the immediate danger was past, he determined to make the best of things.

He again directed his attention upon the bush. To use it as a seat would be preferable to sitting on the hard, cold rock.

As he sat the bush gave way. In vain he clutched wildly for support. Toppling backwards, he disappeared into what appeared to be the solid rock.

For some moments he lay helpless, too dazed to realise what had occurred. He was almost in darkness. A peculiar pungent smell assailed his nostrils. Could it be possible that he owed his present predicament to the explosion of the derelict mine?

After a while Mr. Greenwood raised himself. Grimly he reflected that his visit to Auldhaig had not been uneventful. Adventures were crowding upon each other's heels. His zest for excitement was increasing.

The bush had broken his fall. He found himself on a flat floor of what appeared to be a cavern. Where the foliage had been, appeared an irregular opening through which the dim twilight filtered without sufficient intensity to reveal his surroundings.

"One thing, I've a roof over my head," he soliloquised. "Now I am getting on. But I really cannot understand this peculiar odour. It reminds me very forcibly of a garage. Yes, petrol fumes. To be on the safe side I don't think I'll smoke just at present. In fact, I think it would be well to investigate."

Cautiously and on all-fours Mr. Greenwood commenced his tour of discovery, crawling lest there should be a hole in the floor.

Soon his head came in contact with a metallic object. It was a filled petrol tin, one of dozens, possibly hundreds, stacked in orderly manner against one wall of the cave.

"Now, that's strange," murmured Mr. Greenwood "It is pretty certain that that lot would not have been brought into this place from the cliff, so there must be an outlet besides the hole through which I tumbled. Why should a place like this be chosen to store petrol? And why was the hole so carefully hidden with a dead bush? It looks jolly fishy. Of course I've heard plenty of talk of German secret petrol-bases in Great Britain, but I never believed the tales. By smoke! I fancy I've stumbled upon one now. The first question is, how am I to find a way out without being seen?"

Resuming his cautious crawl, Mr. Greenwood penetrated into the recesses of the cave, keeping within touch of the rows of petrol-cans on his right. Contrary to his expectations, the floor was smooth, though tending to rise in the direction in which he was proceeding.

At about twenty yards from the hole through which he had tumbled, he remembered that he had left his tracks uncovered. No need to creep on all-fours now, for he had the irregular patch of light to guide him. Grasping the displaced bush, he replaced it in the opening, and chuckling to himself he again resumed his tour of exploration.

His spirits were rising rapidly. The love of adventure, that had lain dormant for years, was reasserting itself. Also he began to realise that he had now a chance of doing something definite for his country—a chance that hitherto had been denied him on account of his age.

He had quite forgotten the derelict mine. The fears that he had entertained on that score had been completely dispelled by the thought that he had lighted upon a discovery of real national importance—the existence of a secret base for hostile submarines.

For quite a hundred yards he groped his way. The darkness was so intense that it appeared to have weight—to press upon his eyes. The tunnel, too, had contracted, for by extending both his arms he could touch the enclosing walls. Once or twice he stood erect to relieve the aching muscles of his back. He could then just touch the roof, which, although of solid rock, was bone-dry.

Suddenly his forehead came in contact with a hard object. It was the bottommost step of a stout ladder. The steps extended from side to side, for the tunnel was still contracting. Further progress, except by the ladder, was impossible, since the wall of rock terminated a short distance beyond the base of the steps.

Mr. Greenwood examined his surroundings with great exactitude before attempting the ascent. Everything had to be performed by the sense of touch. The steps were of far greater thickness than the usual type of ladder, and were more apart. Apparently they had been constructed to bear very heavy weights, each one being strengthened by means of a circular iron bar on the underside.

"I'm half inclined to use a match," thought Mr. Greenwood. "It's risky, with all those petrol fumes about, but—— No, I won't; I'll make the best of it."

Slowly he ascended. It reminded him of an infant attempting to climb a staircase for the first time. The steps, in spite of their solidity, creaked under his weight. The sounds, intensified by the enclosed surroundings, added to the uncanniness of the mysterious cave.

At the eighth step he found a trap-door above his head. It was what he expected; but the question arose, what was on the other side? He had no desire to blunder into the presence of half a dozen desperadoes, who would doubtless have no scruples in knocking him over the head and toppling his corpse down the cliff.

Even as he was considering the best thing to be done, he heard footsteps overhead and a deep voice exclaiming, "Now, then, Max; let's get on with the business. It's quite time we showed the signal. Hand me yon crowbar and bear a hand to lift this trap. It's heavy."