Hi Leonidas, why not try orienteering? A lot of British orienteering is forest-based and will give you an excellent opportunity to really develop your navigational skills. If you're near Sheffield you've got one of the best clubs in the country on your doorstep in SYO. I'm pretty sure they run regular training sessions for all levels of ability. There's probably plenty of SYO members in DP too, so you could no doubt tap one of them for info. Try Oli Johnson, you won't find anyone much better at running around with a compass in his hand.