The Orc-encampment of Garmadh-maudhûl boasts a mine which produces ore for the use of the armies of Dol Guldur.
'Within Garmadh-maudhûl, there is a mine being used to resupply Dol Guldur. The ore does not appear to possess the blight that has taken hold in the Ashenslades, which means it is of high quality, and thus a danger to us.
'We must destroy the carts that are being used to transport the ore, but they appear to be of dwarf-make, which may make them difficult to disable.
'Hurry to Garmadh-maudhûl and destroy the carts. The encampment can be found to the north-east by following the trail that traverses up the mountain.'
Garmadh-maudhûl can be found to the north-east of Mithechad by following a trail that traverses up the mountain.
Eirien has asked you to destroy the ore-carts which the Orcs at Garmadh-maudhûl are using to resupply Dol Guldur.
Eirien is at Mithechad, south-west of Garmadh-maudhûl.
You should return to Eirien and let her know that the ore-carts have been destroyed.