They were just at the base of the first hill, which had now become a mountain of gloomy, forbidding aspect, when the first sound they had heard on the moon came to them. A sound that was a commingling of the laughter of Dalis, the barking of jackals of the olden times, the humming of a million Beryls revolving at top speed, and a strident buzzing such as neither had ever heard.
Had they been discovered? Was the sound a warning? They could not know; but as they stared at the crest of the hill, two long, snaky, waving things appeared above the crest, undulating, waving to and fro, as though questing for something. They crouched low in the white ashes at the base of the mountain, and waited, scarcely breathing.
CHAPTER XIII
The Lunar Cubes
or a long time Sarka and Jaska remained still, like sentinels, listening to the strange discord which seemed to emanate from behind the hill at whose base they crouched.
"Look!" said Sarka at last. "There against the sky, beyond and between those two waving tentacles! Note that column of light, scarcely lighter than the light which surrounds it everywhere? It looks like a massive column just lighter than everything around it, yet so little lighter that you have to watch closely to see it at all?"
Jaska stared for all of a minute, before she thought back her answer.
"I see it," she said.
"Note now whether it goes, as it reaches outward into Space!"