[The Squatter of Amon Rûdh]

By any chance, is 10 simply the North-South Road? Or is that a trap for heffalumps?

Not a trap, although I may claim later that it was a cunning double bluff. In any case, that's the right answer.

1. CIRION - Just over a century before rise of moody cinema, this character was known to be good
2. AGLAROND - Silver youth admits little Tolkien to dwarf tourist attraction
3. L Ancestor lost everything on doubles at first
4. EOMER - King was simply nothing when confused
5. NORTH UNDEEP - River's southern profundity? Quite the reverse!
6. ALDOR - Provincial dormer through which one might glimpse the king
7. RIDDERMARK - Wear on saddle perhaps swallows large sum in equestrian parts.
8. D Captain has man downstairs in a flap.
9. H Setter doubly English about tree behind falling note in place for a good hiding
10. ORALD - Ash or alder holding genius by another name.
11. NORTH-SOUTH ROAD - Route descending from one point to another.