But defensive technology had changed, and the WEIRD system incorporated all the latest innovations.
Kahega and his men inflated the silvered Mylar tents, arranging them close together. Ross directed the placement of the tubular infrared night lights on telescoping tripods. These were positioned shining outward around the camp.
Next the perimeter fence was installed. This was a lightweight metalloid mesh, more like cloth than wire. Attached to stakes, it completely enclosed the campsite, and when hooked to the transformer carried 10,000 volts of electrical current. To reduce drain on the fuel cells, the current was pulsed at four cycles a second, creating a throbbing, intermittent hum.
Dinner on the night of June 20 was rice with rehydrated Creole shrimp sauce. The shrimps did not rehydrate well, remaining little cardboard-tasting chunks in the mix, but nobody complained about this failure of twentieth-century technology as they glanced around them at the deepening jungle darkness.
Munro positioned the sentries. They would stand -four-hour watches; Munro announced that he, Kahega, and Elliot would take the first watch.
With night goggles in place, the sentries looked like mysterious grasshoppers peering out at the jungle. The night goggles intensified ambient light and overlaid this on the preexisting imagery, rimming it in ghostly green. Elliot found the goggles heavy, and the electronic view through them difficult to adjust to. He pulled them off after several minutes, and was astonished to see that the jungle was inky black around him. He put them back on hastily.
The night passed quietly, without incident.
Chapter 9
DAY 9: ZINJ
June 21, 1979
1.Tiger Tail
THEIR ENTRANCE INTO THE LOST CITY OF ZINJ ON the morning of June 21 was accomplished with none of the mystery and romance of nineteenth-century accounts of similar journeys. These twentieth-century explorers sweated and grunted under a burdensome load of technical equipment - optical range finders, data-lock compasses, RF directionals with attached transmitters, and microwave transponders - all deemed essential to the modem high-speed evaluation of a ruined archaeological site.
They were only interested in diamonds. Schliemann had been only interested in gold when he excavated Troy, and he had devoted three years to it. Ross expected to find her diamonds in three days.
According to the ERTS computer simulation the best way to do this was to draw up a ground plan of the city. With a plan in hand, it would be relatively simple to deduce mine locations from the arrangement of urban structures.
They expected a usable plan of the city within six hours. Using RF transponders, they had only to stand in each of the four corners of a building, pressing the radio beeper at each corner. Back in camp, two widely spaced receivers recorded their signals so that their computer could plot them in two dimensions. But the ruins were extensive, covering more than three square kilometers. A radio survey would separate them widely in dense foliage - and, considering what had happened to the previous expedition, this seemed unwise.
Their alternative was what ERTS called the non-systematic Survey, or "the tiger-tail approach." (It was a joke at ERTS that one way to find a tiger was to keep walking until you stepped on its tail.) They moved through the ruined buildings, avoiding slithering snakes and giant spiders that scurried into dark recesses. The spiders were the size of a man's hand, and to Ross's astonishment made a loud clicking noise.
They noticed that the stonework was of excellent quality, although the limestone in many places was pitted and crumbling. And everywhere they saw the half-moon curve of doors and windows, which seemed to be a cultural design motif.
But aside from that curved shape, they found almost nothing distinctive about the rooms they passed through. In general, the rooms were rectangular and roughly the same size; the walls were bare, lacking decoration. After so many intervening centuries they found no artifacts at all - although Elliot finally came upon a pair of disc-shaped stone paddles, which they presumed had been used to grind spices or grain.
The bland, characterless quality of the city grew more disturbing as they continued; it was also inconvenient, since they had no way to refer to one place or another; they began assigning arbitrary names to different buildings. When Karen Ross found a series of cubby holes carved into the wall of one room, she announced that this must be a post office, and from then on it was referred to as "the post office."
They came upon a row of small rooms with postholes for wooden bars. Munro thought these were cells of a jail, but the cells were extremely small. Ross said that perhaps the people were small, or perhaps the cells were intentionally small for punishment. Elliot thought perhaps they were cages for a zoo. But in that case, why were all the cages of the same size? And Munro pointed out there was no provision for viewing the animals; he repeated his conviction that it was a jail, and the rooms became known as "the jail."
Near to. the jail they found an open court they called "the gymnasium." It was apparently an athletic field or training ground. There were four tall stone stakes with a crumbling stone ring at the top; evidently these had been used for some kind of game like tetherball. In a corner of the court stood a horizontal overhead bar, like a jungle gym, no more than five feet off the ground. The low bar led Elliot to conclude that this was a playground for children. Ross repeated her belief that the people were small. Munro wondered if the gymnasium was a training area for soldiers.
As they continued their search, they were all aware that their reactions simply mirrored their preoccupations. The city was so neutral, so uninformative, that it became a kind of Rorschach for them. What they needed was objective information about the people who had built the city, and their life.