It was this which finally convinced him that the things, in spite of their improbable shape, were mountains; and with that discovery the mere oddity of the prospect was swallowed up in the fantastic sublime. Here, he understood, was the full statement of that perpendicular theme which beast and plant and earth all played on Malacandra—here in this riot of rock, leaping and surging skyward like solid jets from some rock-fountain, and hanging by their own lightness in the air, so shaped, so elongated, that all terrestrial mountains must ever after seem to him to be mountains lying on their sides.