Lake Donigarten

Lake Donigarten was a lake in Menzoberranzan. The lake and its island, the Isle of Rothe, were managed by House Hunzrin, which provided rothé cheese and meat to the city.

Geography
The lake was located in the eastern end of the great cavern housing Menzoberranzan. The land in and around Donigarten produced most of the agriculture of Menzoberranzan and housed moss fields, giant mushrooms, fungus farms, rothe herds, and fish.

There were nine tunnels between Lake Donigarten and the edge of the Qu'ellarz'orl plateau.

There was a subterranean tributary of the Surbrin flowing into Lake Donigarten. The lake was said to be the source of much treasure but that it was inhabited by dangerous creatures who lurked under the water.

Unbeknownst to all, underneath the lake was a long-abandoned and flooded temple to Ghaunadaur, which was constructed by House Masq'il'yr, one of the founding houses of Menzoberranzan. The house was destroyed and the secret of the temple was lost. However, a number of priests and priestesses of the house were transformed into ghauropers that lurked in the water, guarding the temple.

Isle of Rothe
The lake had a central moss-covered island known as the Isle of Rothe that was home to a herd of rothé tended to by orc and goblin slaves, who also fished the lake for their drow masters.

History
In the early days of Menzoberranzan, elite drow were "buried" in the waters of the lake, all their finery and magic intact and their bodies affixed to adamantite.

In 1361 DR, the city was still recovering from the chaos caused by the drow's attack on Mithral Hall. There were not enough slaves on the island and there was not enough quality care for the rothe, causing the herds to dwindle. Shakti Hunzrin, on leave from Arach-Tinilith to look after the herds, reported the following dismal numbers:
 * 40 goblins; half of them herders, half of them breeders, but all working as herders at the time.
 * 11 rothe born that season, 2 of them stillborn.