Southwards, the beach ran into the distance. But to the north, it ended at a cliff rising up to a low mesa. Cassie walked over to Davey, who was overseeing the marines unloading the submersible and drilling equipment. “Cool, eh?” he said, looking around them. She pointed at the mesa. “That’s cooler to a rock nut.” He looked up the beach. “Okay. But keep your per-comm on.” Cassie nodded and set out. The cliff was an hour’s walk. Cassie didn’t mind, enjoying the exercise and strange surroundings. She took pictures of the rock strata and climbed to get samples at different levels. Then she walked back. They captured Cassie just as she was wondering why the hopper seemed deserted. The natives appeared so quickly and silently, they seemed to rise from the sand. Cassie counted about forty o

