Ok, I give in!

Technology has something to offer wilderness navigation after all.
When you can't see the tops for the trees, a little help comes in handy.
I've always been a bit of a ludite about this sort of modern navigation, but it did come in handy.
I'm equally pleased to report that later on in the morning, it completely failed, and i was gladly able to resort to map and compass work.
Its a tump by the way ;-)