"But it has not come alone. It has not twisted itself out of shape; some one has been here before us!
"Yes—a man has."
"And who was that man?"
"A man who has engraved his name somewhere with that dagger. That man wanted once more to mark the way to the centre of the earth. Let us look about: look about!"
And, wonderfully interested, we peered all along the high wall, peeping into every fissure which might open out into a gallery.
And so we arrived at a place where the shore was much narrowed. Here the sea came to lap the foot of the steep cliff, leaving a passage no wider than a couple of yards. Between two boldly projecting rocks appeared the mouth of a dark tunnel.
There, upon a granite slab, appeared two mysterious graven letters, half eaten away by time. They were the initials of the bold and daring traveller:
[Runic initials appear here]
"A. S.," shouted my uncle. "Arne Saknussemm! Arne Saknussemm everywhere!"