So we plumped for the cave. Having stripped to vest and trousers, Garth and I started carrying up our stores from where the launch of the Naomi had deposited them on the beach. While we stacked the various boxes neatly at the back of the cave, Carstairs was busy fitting up what he called his "field-kitchen." Higher up the rocks, in a little cavity well-sheltered from the wind, he installed his Primus stove, cook-pots and other impedimenta.

It was with the utmost reluctance that I spared the time for this tiring but necessary fatigue. I was on fire to be off into the interior of the island and locate the grave. Garth, too, was as keen as mustard, and fairly jumped at my proposal that, as soon as the stores were stowed away, we should set forth on a voyage of discovery.

It was a long job; for the cases were heavy and the going was bad, but when I stood on the beach below and, with the roar of the ocean in my ears, looked up at our temporary home, I felt rather pleased. Absolutely no trace of our presence was discernible. Though I was aware that perhaps not one vessel in two years called at the island, I have always had a very healthy respect for the long arm of coincidence. I did not wish my investigations at Cock Island to become the mark of prying eyes.

It was past three o'clock and the sun very warm when Garth and I set out. We took with us a flask of cold tea apiece, some biscuits and some dates and a shot-gun each. With a wave of the hand to Carstairs, our guns slung across our backs, we plunged into the tangle of steep woods growing down to the shore.

The climate of the island seemed to be temperate enough. The air was a little steamy but mild and at first there was a pleasant breeze off the sea to cool us. To be equipped for the rocky nature of the island both of us had brought stout hob-nailed boots, and we praised our circumspection when we realised that only by boulder-climbing should we gain access to the higher parts of the island.

The climbing was arduous (for neither of us was in form) but not too difficult. I kept a sharp look-out for any traces of former visitors. Once I found some sheep droppings and again a large bleached bone which looked as if it might have come from a sheep. But of man there was no trace.

The scrub soon gave way to forest and for a good half hour we toiled up the jungle-clad slopes. Great trees formed an almost impenetrable roof over our heads through which the sunshine fell but sparsely. We went forward in a dim and mysterious twilight with no sounds in our ears other than the swift rushing of the stream which gave us our direction, our laboured breathing and the rattle of our nailed boots on the boulders. It was an eerie place which somehow filled me with misgivings.

Suddenly Garth, who was leading, gave a shout. He stood on the flat top of a rock, a dozen feet above my head, and pointed excitedly in front of him. I scrambled to his side.

We were looking down into a deep circular depression shaped like a basin. It reminded me of a quarry, but I imagine it was in reality the crater of some small extinct volcano. What had brought the shout to Garth's lips was the sight of a ruined hut which thrust its broken roof from out of a tangle of gigantic ferns.

So breathless were we with our climb that we were past speech. In silence we slithered and scrambled down into the hollow, the long tendrils of the plants twisting themselves round our legs and the thorns catching in our coats.