Miracles are unlikely . ART-drone put the annotated pre-mission chart we had made into the team feed and on visual on the shuttle’s floating display surfaces. The chart basically said there were three probable reasons why we hadn’t noticed a secondary colony/habitation site on this continent earlier during ART’s initial scans of the planet: (1) the colonists here had deliberately meant for their power output and signal activity to be concealed by the massive interference broadcast by the terraforming engines’ normal oper ation; (2) the colonists put their site where they wanted to put it and didn’t consider the fact that they would be concealed by the terraforming interference because the other colonists knew where they were so the subject had just never come up; (3) they were all dead, due to the alien contamination or some other cause, and there was no power output or signal activity to detect. ART-drone added, As noted previously, limited signal traffic from pathfinders and the warning buoys is still possible. The humans here should be able to detect our comm pings at this close range. So they may be dead, their equipment may be damaged, or they may be deliberately ignoring us in an effort to stay concealed .