Almuric by Robert E. Howard

It was past sunrise when we started back on the long trek toward Koth, swinging far to the west to avoid the devil city from which we had escaped. The sun came up unusually hot. The air was breathless, the light morning wind blew fitfully, and then died down entirely. The always cloudless sky had a faint copperish tint. Altha eyed that sky apprehensively, and in answer to my question said she feared a storm. I had supposed the weather to be always clear and calm and hot on the plains, clear and windy and cold in the hills. Storms had not entered into my calculation.

The beasts we saw shared her uneasiness. We skirted the edge of the forest, for Altha refused to traverse it until the storm had passed. Like most plains-dwellers, she had an instinctive distrust of thick woods. As we strode over the grassy undulations, we saw the herds of grazers milling confusedly. A drove of jumping pigs passed us, covering the ground with gargantuan bounds of thirty and forty feet. A lion started up in front of us with a roar, but dropped his massive head and slunk hurriedly away through the tall grass.