You discovered a series of giant footprints in Tâl Bruinen and a brooch belonging to Ringhul, marchwarden of the High Moor.
'If you believe you have finished here, you might journey to the High Moor. I am certain that Ringhul would appreciate the return of his brooch. As well, he may know something of the giant who travelled through Tâl Bruinen not long ago, for it is said that there is a dwelling place of giants not far from his post.
'If you take the path north back to the main road, then head eastward, you will come to the Ford of Bruinen. Cross the Ford and travel southward, following the path up into the hills. Atop the plateau of the High Moor, you will find Ringhul's post.'
Ringhul is at his post on the High Moor, north and east of Tâl Bruinen.
Candelleth told you that the brooch you found belong to a former scout of hers named Ringhul, who is now posted upon the High Moor, and suggested that you bring it to him and inquire about the giant.
Arifael lives on the slope of Amon Nendir, south of the High Moor on the eastern edge of the Trollshaws.
Elrohir is concerned about the giant footprints you saw in Tâl Bruinen and wants you to ask Arifael if he has heard of giants wandering that far south.