He did so. Immediately the hole filled with a flowing exudation similar to the ooze below him. It spread over the edges and began to harden. "Acts like the stuff they used to put in bicycle tires to make them puncture-proof," commented Marlin. "Is it solid clear through?" DuChane stared. He was breathing more heavily than his recent exertion seemed to warrant. "I forgot you don't know. This is Thornboldt's space ship. Or was. He built it in the form of a metal sphere, girded and braced inside, all equipped with dynamos and machinery. Had a big crew of workmen. When it was just about finished--even provisioned--his backers decided that the whole thing was crazy and shut off his money supply. Articles like that one by Lamberton finished them. To cap the climax, the thing broke through its scaffold and sank into this pit." "Funny place to build in the first place." "His idea was to keep the construction a secret from the general public. This crater-like depression, with its only entrance through the old mine tunnel, was far enough out of the way to accomplish the purpose, even though it must have enormously increased the cost of assembling materials. Anyway, after it fell into the pit, the creeping rotation commenced and the shell has gradually taken on this coating of lava--or whatever the stuff is. It's at least four feet thick by this time. Somewhere inside is an entrance port, but there's no way of locating it. The whole thing is so incomprehensible that it's driven him crazy. At least he thinks it has." "You think otherwise?" DuChane glanced at his companion. "Possibly his theories are ridiculous, but no one can deny that the ball actually moves and is coating itself with a thick layer of this lava-like stuff. It's just one of those accidental freaks of nature." Marlin brushed at a swarm of insects and leaned over to follow the flight of a bird into the depths below. "Two to one it never comes up," DuChane offered. "The stuff is like flypaper. The smell seems to have a fatal attraction for birds and small animals--chipmunks and the like. Or perhaps they're drawn by the seeds that blow in and stick to the surface. Sometimes they escape, but if the consistency is right, it sucks them in, like quicksand. Maw Barstow claims she lost a flock of chicks that way. And if you can believe her, several dogs, and a cat or two, have been trapped by the ooze during her time. There's even a story about some calves and sheep that wandered over the ledge and never could be located, the inference being...." They were interrupted by the arrival of Thornboldt, followed reluctantly by Link and McGruder. He was carrying pick and shovel and seemed unexpectedly imbued with energy. "Get tools," he commanded tersely. "You can't stand around here like drones. I have valuable equipment in there. It must be saved." He attacked the shell with furious strokes of the pick. After a moment, Marlin joined his efforts with the crowbar.