A little more than halfway down the trail, a wide flat rest area was carved out of the rock. Radnal let the tourists halt for a while, stretch their legs and ease their weary hindquarters, and use the odorous privy. He passed out ration packs, ignored his charges’ grumbles. He noticed Dokhnor of Kellef ate his meal without complaint.

He tossed his own pack into the bin by the privy, then, a couple of cubits from the edge of the trail, peered down onto the floor of the Bottomlands. After one of the rare rains, the park was spectacular from here. Now it just baked: white salt pans, gray — brown or yellow — brown dirt, a scattering of faded green vegetation. Not even the area around the lodge was watered artificially; the Tyrant’s charter ordained that Trench Park be kept pristine.

As they came off the trail and started along the ancient sea bottom toward the lodge, Evillia said, “I thought it would be as if we were in the bottom of a bowl, with mountains all around us. It doesn’t really feel that way. I can see the ones we just came down, and the Barrier Mountains to the west, but there’s nothing to the east and hardly anything to the south — just a blur on the horizon.”

“I expected it would look like a bowl, too, the first time I came here,” Radnal said. “We are in the bottom of a bowl. But it doesn’t look that way because the Bottomlands are broad compared to their depth — it’s a big, shallow bowl. What makes it interesting is that its top is at the same level as the bottom of most other geological bowls, and its bottom deeper than any of them.”

“What are those cracks?” Toglo zev Pamdal asked, pointing down to breaks in the soil that ran across the tour group’s path. Some were no wider than a barleycorn; others, like open, lidless mouths, had gaps of a couple of digits between their sides.

“In arid terrain like this you’ll see all kinds of cracks in the ground from mud drying unevenly after a rain,” Radnal said. “But the ones you’ve noticed do mark a fault line. The earthquake we felt earlier probably was triggered along this fault: it marks where two plates in the earth’s crust are colliding.”