For a scenic browse, and an answer-page for Guess The World...
Ciaran felt good. The heat of the sunballs that floated always, lazy in a reddish sky, made him pleasantly sleepy. And after the clamor and crush of the market squares in the border towns, the huge high silence of the place was wonderful.
He and Mouse were camped on a tongue of land that licked out from the Phrygian hills down into the coastal plains of Atlantea. A short cut, but only gypsies like themselves ever took it. To Ciaran's left, far below, the sea spread sullen and burning, cloaked in a reddish fog. To his right, also far below, were the Forbidden Plains...
Leigh Brackett, The Jewel of Bas (Planet Stories, Spring 1944)
A half-dozen of the bulks stirred uneasily... moving clumsily. Then, broadside on, they started rolling toward the two men on the most direct line - through the lake of liquid hydrogen.
"They'll drown in that," pronounced Blake.
"Or freeze. I - " Penton stopped. The first one had rolled into the liquid, sending it splashing in rainbow showers of ultra-cold. It rolled smoothly on into the lake, going deeper and deeper, until it was fully twenty feet deep in the stuff. Then, it stopped. Blake stared open-mouthed as the huge, blunt end of the vast cylinder of apparently brainless flesh split. As though hinged, an immense, thick flap of leathery hide rolled down, and instead of the leathery, featureless cylinder-end, a whole assortment of organs appeared.
First was a tube, fully two feet in diameter, that shot out like an elephant's trunk, to dip into that inconceivably frigid lake. The mobile liquid swirled and bubbled, twisting in vortices. With a tremendous smack, audible even in that thin, chill air, the tube broke contact with the surface of the liquid.
"Drinking," gargled Penton, "drinking liquid hydrogen..."
John W Campbell, The Tenth World (Thrilling Wonder Stories, December 1937)