The map is pretty badly scrambled; confused from how much ambient magic is in the air, it seems to show a few point concentrations moving around, and a big static one below their feet. Or, a few times Nanami squints at it, possibly far over their heads; the map seems uncertain, and prone to not working at long ranges either. The fog around them seems to be about as opaque to magic as to sight, unfortunately. If it helps, it doesn't seem like either of the things overhead have anything in the way of magical artifacts on them, since they're not registering on the map but are within seeing distance.