The Sunless Sea
City of the Glass Pool
This was a great kuo-toan city, built for no other purpose than to house the fervent worshippers of Blibdoolpoolp. To the great Sea Mother, it was a sacred place until her followers failed to stop a threat to her people and unholy temple.
Even after sending a minor avatar in a last stitch effort to stop the infidels, her city fell and her clergy and king fell.
The Dome over the Glass Pool is now cracked and broken.