It was a walk of perhaps two miles, headed north along the east side of the river, before they reached a simple bridge that would take them back across to the western side of the river.
Brigitta looked down nervously at the muddy water that swept along under the bridge. Nobody seemed much inclined to try an escape here, given their last river crossing experience.
Once across the bridge they were marched through a simple camp of several dozen tents. More natives, and more westerners, milled about the camp.
It was a short walk from the camp to what Dr. Parthenis had called "the Main site." The main site was in the wall of the valley, like the temple they'd just been in. It looked like it had recently been exposed by an enormous mud slide.
The Doctor led them into the complex. The group had to clamber over large chunks of muddy, slippery stone before they could stand up inside. Almost as one, they gasped.
The inner hallway was brilliantly lit by just a few lanterns. The walls and ceilings of the complex were made entirely of crystal of various colors, arranged in beautiful, alien patterns that reflected and amplified the light.
Curiously, the tunnel was round, like a tube. Where the walls met the ceiling and the floor, they were smoothly curved. Overall, the effect was quite disorienting.
They were marched down a long hall. Brigitta was busy marvelling at the crystals, but most of the men, with their military training, were busy counting off the distance and paying attention to the side passages and doorways they passed.
It was a long, long walk down a straight corridor-- almost a quarter mile, Joshua guessed-- until they reached and passed through two sets of double doors into an enormous domed cavern.
Ahead of them, in the center of the massive crystalline chamber, stood an edifice of basalt stone, easily twenty feet tall. Its black surfaces gleamed with alien symbols unmarred by time. Two massive black pillars, carved with mysterious script, flanked the archway on either side. Aside from the script, the dark stone was featureless save for indentations, one on each structure, eight inches wide and twelve deep. The whole structure exuded a sense of ancient strength, of hidden power, and mysterious purpose.
Dr. Parthenis paused at the doorway. "It's beautiful, isn't it?" He paused for a moment, taking it all in with the rest of them.
"Well, let's see the crystal, shall we?"