The next move was to the summit of the flat tableland, which was of course easily reached by the _Flying Fish_. It proved to be, as had already been surmised, merely an enormous mass of bare rock, without a scrap of soil or vegetation of any kind about its surface, and useful only as a citadel, into which, had it been planted in some more accessible spot on the earth's surface, it would undoubtedly have been converted, in which case it would have eclipsed even Gibraltar itself in the matter of impregnability. Useless as it was, however, where it stood, its summit afforded an admirable look-out; and from that point of vantage the travellers made the discovery that "Elphinstone Land" was an island, the horizon at that elevation being bounded by the sea on every side. The rock was roughly circular in shape, with a circumference of about three miles, and the travellers made the circuit of the summit in about an hour and a half, pausing at frequent intervals to admire and enjoy the magnificent panorama of woods and hills and streams which lay spread out beneath them. Herds of elk, reindeer, and musk-oxen were seen dotted about here and there on the plains below, as well as a skulking wolf or two, a few Arctic foxes, and other wild animals. The herd of mammoths--apparently the only herd in the island--was also seen; and, with the aid of their telescopes, the travellers were also able to make out, far away at sea, certain dark moving spots which, from their alternate appearance above and disappearance beneath the surface, they judged to be whales. The chief business of the travellers, however, on the summit of "Mount Mildmay" was to ascertain whether or no the North Pole of the earth was or was not situated within its circumference. This was rightly regarded as a matter of such great importance that several days were unhesitatingly devoted to its settlement; and Mildmay, the professor, and Colonel Lethbridge were busy from breakfast time in the morning until dinner-time at night, making the most careful observations and working out the necessary calculations. These were at length satisfactorily completed--not one moment too soon, for the sun was daily dropping nearer and nearer to the horizon--and the trio were enabled, not only to say that the North Pole _was_ contained within the limits of the summit, but to plant their feet upon it and to say unhesitatingly and authoritatively: "This is the North Pole!" The position having thus been accurately determined, the next thing was to mark the spot.