Duvuinen is an area within Angmar in the south-eastern region.
Surrounded at all sides by Eastern Malenhad lies this sulphuric lake with crystal clear water. Duvuinen (Sindarin for Beloved Nightfall) probably refers to the lake gleaming in the late sun-set, at least it did before the shadow of Carn Dûm begun to blanket the lands of Angmar. Most of the lake is no more than a foot deep, though the southern section near the passage to the dwarven mining outpost of Gabilshathûr is considerably deeper.
Some creatures from the surrounding areas lie sunbathing at the shores—mainly fiery worms, neekerbreekers, and slugs—but the waters themselves lie undisturbed. The dwarves from the nearby outpost speak of a massive turtle, Gaeruan, who has made her nest in the centre of the lake, though sightings of her are rare.
The following creatures are found within the area:
Most of the lake is no more than a foot deep
Steam venting fumaroles line the shores of the lake
The northern half of the sulphur lake
The southern portion of Duvuinen is deeper