Hot springs joined to form a steaming river. Vegetation grew savagely under the huge sun. The air, kept at almost constant temperature by the blanketing effect of the hot springs, was stagnant and heavy.
But up above, high over the copper cables that crossed every valley where men ventured, the eternal wind of Mercury screamed and snarled between the naked cliffs.
Three concrete domes crouched on the valley floor, housing barracks, tool-shops, kitchens, store-houses, and executive quarters, connected by underground passages. Beside the smallest dome, joined to it by a heavily barred tunnel, was an insulated hangar, containing the only space ship on Mercury.
In the small dome, John Moulton leaned back from a pile of reports, took a pinch of Martian snuff, sneezed lustily, and said.
"Jill, I think we've done it."
The grey-eyed, black-haired young woman turned from the quartzite window through which she had been watching the gathering storm overhead. The thunder from other valleys reached them as a dim barrage which, at this time of Mercury's year, was never still.
"I don't know," she said. "It seems that nothing can happen now, and yet.... It's been too easy."
"Easy!" snorted Moulton. "We've broken our backs fighting these valleys. And our nerves, fighting time. But we've licked 'em!"
He rose, shaggy grey hair tousled, grey eyes alight.
"I told the IPA those men weren't criminals. And I was right. They can't deny me the charter now. No matter how much Caron of Mars would like to get his claws on this radium."