Summary

The story opens with an unnamed biologist who is going on an expedition with three other scientists (all in different disciplines). They are going to Area X. They carry black measuring devices on their belts, which will indicate if the area is safe enough to be in. If it glows red they are to leave for a safer zone. They are not allowed to have watches or compasses.

This is the last expedition to be sent, the biologist states, as several other expeditions resulted in mixed results. It has been two years since the last expedition was sent. The biologist's team is comprised of all women: biologist, an anthropologist, a surveyor, and a psychologist. The psychologist has been appointed as their leader. No form of communication would be allowed for fear of irrevocable contamination. No technology of any sort is allowed, though they...