At one point, Salbyton, the settlement outside the fort, had been a construction boomtown as the Trans-Temporal Express labored on the Traisum Cut. Its peak population had been as high as seven or eight thousand, although it had declined from that quickly once the cut was completed. By the time the Chalgyn Consortium had set out on its productive, ill-fated survey expedition, Salbyton had been down to perhaps two thousand, and TTE, as was its wont, had collected and hauled off the temporary, portable housing in which most of its labor force had lived. Despite that, the remaining buildings of Salbyton had a look of permanency and solidity which was rare this far from Sharona, and the local railroad station had quite literally miles of heavy-duty sidings left from its days as the end of the TTE's line.

Neither the fort nor the town had changed a great deal—yet—despite all that had happened since, but that was about to change. All of that temporary housing TTE had pulled out was undoubtedly on its way back, although it might not be stopping at Salbyton this time. The new construction priorities closer to Hell's Gate were going to dwarf the importance of making the Traisum Cut.

There was a two-hour time difference between the two sides of the portal, which, fortunately was also one of the older portals which had so far been discovered. It must have been ... lively around Fort Salby's present location for the first century or so after the portal formed, Kinlafia reflected. The altitude differential was less than that of some other portals, but it had still been sufficient to channel a standing, unending, twenty-four-hour-a-day, three-mile-wide hurricane through from Karys until the pressures finally equalized. There was ample evidence of the sort of sandblasting erosion portals at disparate heights tended to produce, although none of it was very recent. And there was still a permanent, moderately stiff breeze blowing through the portal, even now, which made it unfortunate that Zaithag was about as dry (and hot) as Narshalla. Fort Salby could have used a little rain, if Karys had had any to spare.