The dragon was less than impressed with the map, but was also well aware that this was essentially unexplored lands. Once he had set up and started clearing things out, he could hire actual surveyors to come in and do the work. That would be after he could fly, and would be checking to make sure they weren't just guessing at the distances like some map makers did. But now that he had an idea what the area looked like, in the vaguest of senses, he could start planning things out. First, clear out the area around the outpost, then start pushing south.