I agree with Reb10. Creating and executing one’s own trail is a challenge that I also enjoy, it gives me an independence.
On a pre-arranged lowland trail my GPSr may say ‘next cache at 198 meters’. You know it will be a well trodden, dog mess littered footpath or a race track country lane. On the moor it could easily say ‘next unfound cache at 1.27 kilometers’ and you’re not exactly sure if you will encounter bogs, rocks, streams or a driving hail storm in the open.
Now that’s a challenge. GH.