"Found another city, Take?" asked Sulewayo at the other's call.
"Not exactly. It's—well, I guess it's really a system of those joints you keep talking about. Still, it looks awfully regular." He sounded a little wistful.
"It does." The paleontologist nodded slowly. "As you say, it's probably a joint system. Also, it's probably full of volcanic ash, if my eyes don't deceive me. Rob, what's the chance of a landing on one of the shelves? There are at least three formations accessible on foot from that point; and I could get some more tuff samples to make or break your peace of mind, while I was doing my own work."
Lampert examined the area carefully. Like Earth's Grand Canyon, this one receded from time to time in shelves where softer layers of rock had worn further back, or the orogenic p
