Fluvenilstra was an Underdark city located 11 miles (18 kilometers) beneath the Shaar Desolation in southern Faerûn in the late 15th century DR. The city was known primarily for its fungus forest and as a training ground for genasi who wished to mix their earth and water natures.[1]


Some of the water that flowed through the Shaar prior to the Spellplague of 1385 DR was redirected to Fluvenilstra and the city was well watered. The city was lit by luminescent fungi and many of the buildings were constructed from magically altered fungi.[1]


The city was governed by a circle of druids known as the Circle of the Depths.[1]


Fluvenilstra had an armed force of several hundred.[1]


As well as genasi, the city had a number of myconid residents.[1]



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