Then he led the way into his earth-borer, and the little door closed quietly and firmly into place.
For a few minutes slight tappings came from within, as if a wrench or a screwdriver were being used. Then the tappings stopped, and all was silence.
A choke, a starting cough, came from beneath the sphere. A torrent of rushing sound burst out, and spears of orange flame spurted from the bottom and splashed up its sides, bathing it in fierce, brilliant light. It stirred. Then, slowly and smoothly, the great ball of metal raised up.
It hit the edge of the hole in the ceiling, and hung there, hesitating. Side-rockets flared, and the sphere angled over. Then it slid, roaring, through the hole.
Swiftly the spots of orange from its rocket-tube exhausts died to pin-points. There were now almost twenty of them. And soon these pin-points wavered, and vanished utterly.
Then there was only blackness in the hole that went up to the surface. Blackness in the hole, calm night on the desert above—and silence, as if the cavern were brooding on the puny figures and strange machines that had for the first time dared invade its solitude, in the realms four miles within the earth....
The monster emanated power, sinister, malevolent power.