Source: Travelling in FotR
Disclaimer: Tolkien mapped Middle-earth…
Finger and thumb marked out distances as substitute compass-points - here to here… to here… He planned his route judiciously, concentrating carefully on his proposed path over hills and folds; where he’d wander next, which parts presently passed over he’d a mind to visit when time allowed.
It was very satisfying to regard the desired point some distance beyond his walking fingertips, to calculate how long his explorations might reasonably last. Not to take time to make discoveries would be a disservice - and he was determined to preside wisely and generously here… as Boromir moaned softly, naked beneath his curious hands.