A mad Gedney might have made the groups of dots in imitation of those found on the greenish soapstones, just as the dots on those insane five-pointed grave mounds might have been made; and he might conceivably have prepared rough, hasty sketches – varying in their accuracy or lack of it – which outlined the neighbouring parts of the city and traced the way from a circularly represented place outside our previous route – a place we identified as a great cylindrical tower in the carvings and as a vast circular gulf glimpsed in our aerial survey – to the present five-pointed structure and the tunnel mouth therein.

He might, I repeat, have prepared such sketches; for those before us were quite obviously compiled, as our own had been, from late sculptures somewhere in the glacial labyrinth, though not from the ones which we had seen and used. But what the art-blind bungler could never have done was to execute those sketches in a strange and assured technique perhaps superior, despite haste and carelessness, to any of the decadent carvings from which they were taken – the characteristic and unmistakable technique of the Old Ones themselves in the dead city’s heyday.

There are those who will say Danforth and I were utterly mad not to flee for our lives after that, since our conclusions were now – notwithstanding their wildness – completely fixed, and of a nature I need not even mention to those who have read my account as far as this. Perhaps we were mad – for have I not said those horrible peaks were mountains of madness? But I think I can detect something of the same spirit – albeit in a less extreme form – in the men who stalk deadly beasts through African jungles to photograph them or study their habits. Half paralysed with terror though we were, there was nevertheless fanned within us a blazing flame of awe and curiosity, which triumphed in the end.

Of course we did not mean to face that – or those – which we knew had been there, but we felt that they must be gone by now. They would by this time have found the other neighbouring entrance to the abyss, and have passed within, to whatever night-black fragments of the past might await them in the ultimate gulf – the ultimate gulf they had never seen. Or if that entrance, too, was blocked, they would have gone on to the north seeking another. They were, we remembered, partly independent of light.