I remember I can do some scouting from within the ship by turning the back row (Feanor and nodikus) in the ship and moving to the back, looking around. This reveals a lot more of the map but sadly we can't spot aliens from the craft.
We are in the north-west corner of the map. To the northeast, the hedge blocks our way into the field, although rifles can punch holes in hedges I think
East of that tile, a stone wall. If we want to go this way we have to blow a hole in the fence and blast the wall.
Directly east of the skyranger, a fence blocks the way, this provides cover if we kneel behind it and we could probably blow a hole in it too.
East of that field there is another hedge with a gap
Directly south of the skyranger is an orchard which provides cover to our team and the aliens
South of the orchard, another field
South east of the skyranger, a field
And east of that - cabbages!
Here's the revealed map so far. Still no sign of the crashed UFO
Don't worry about the big white X, that's just where the camera is pointed.
EDIT: It seems the best place to start looking is east and south. We should probably split into 2 teams and begin a sweep, maybe leaving someone covering to the northeast.
It looks fairly safe to leave the skyranger but I could be horribly wrong of course.