It was a massive stone cross, larger than any I'd seen before and weather stained with age. As the cruiser spiralled down towards its base and then beyond, I realised that whoever had built the monument had set it on a huge central buttress of rock so it gave the impression of a titanic broadsword sunk into the earth by some retired warrior god. It was entirely in keeping with the dimensions of the mountains around it, as if no human agency could possibly have put it there. The stepped terraces of stone and ancillary buildings below the buttress, themselves monumental in size, shrank almost to insignificance under the brooding presence of this single artefact.