Yet strangely we do have the same basic biology as pigeons and all other eukaryotes, which even if it isn't as highly developed as in migratory animals is present, and owing to natural variation is present at varying degree,s between any two individuals. (as best science knows anyway. Quite how animals do sense migratory routes is still debatabl. SO abolsutely humans do have a native sense of direction, and some people are inherently better at it than others. Which isn't to say it can't be learnt. But there's a vast difference between learning how to navigate, and that sense that some people have (and others don't) of knowing where you are relative to another location.
I can navigate extremely well. I read and understand maps and can relate them to the countryside/landmarks around me. But I have no innate sense of direction. If I haven't studied and kept concentrating on the map I have literally no clue even in what direction home might lie. I can work it out, usually. But other people will just 'know'. GPS is godsend, as it means I don't have to concentrate all the time, but can enjoy and admire the ride.
GPS does work on Salisbury Plain but there are some areas where military equipment appears to block the signal. They do a lot of jamming and radar stuff up there.
Eh? that's one of the prime cases where GPS is wonderful. You don't need landmarks for it. Map and compass without anything to sight on is very hard work.