Ramdir is concerned about the massive presence of Orcs on Amon Hen and wants you to scout the hilltop to see how many Orcs gather on Amon Lhaw.
'How much do you know of this area, ${PLAYER}? Two hills rise on either side of the river and between them the torrent descends at Rauros. You can hear the falls from quite far away, such is the power of his voice as it echoes between the slopes of the hills. The names of these hills are Amon Hen, on this side of the river, and Amon Lhaw, on the far side.
'There are great stone seats on the crest of each hill, the Seat of Seeing on Amon Hen and the Seat of Hearing on Amon Lhaw. In days of old, great kings came to sit in those high places and much was revealed to them.
'There is a massive Orc-presence upon Amon Hen, just to the east of here. Climb the hill, defeating as many of the Orcs as you can, and stand at the summit. If you look across the river, you may be able to see if Amon Lhaw is host to a similar Orc-presence. That will tell me with what we may deal.'
The Seat of Seeing is located atop Amon Hen, east of Parth Galen.
Ramdir has asked you to climb Amon Hen, defeating Orcs as you go, and to stand at the Seat of Seeing and look across the river.
Ramdir is at Hestil's camp near Parth Galen.
You have seen evidence of a large massing of Orcs on Amon Lhaw and should report it to Ramdir.