The Green Girl by Jack Williamson — Read

For half a dozen hours we lumbered eastward through the forest. We wallowed through swamps, and rolled over broad green meadows alight with the crimson day, and broke through jungles bright with purple bloom. At last we emerged on a narrow upland, with the great lake below it. The black sheet of water, tinged with the red light of the sky, stretched away for many miles to the eastward. Along its northern shore we could see the low cliffs that divided it from the pit of Xath.

We stopped the machine, and looked for a long time across the black lake to the north, and over the low cliffs to the ruby mist beyond, alive with the dancing violet lights.