Pirates' Skyhold was an earthmote located in the vicinity of the Docks District of Neverwinter.
Pirates' Skyhold hovered over the Sea of Swords, to the north of the Docks District of Neverwinter and floating over 100 feet in the sky. As it lacked any connection to the city, it was difficult to reach the earthmote if one didn't have their own means to provide flight transportation.
Recent History:
A few years after the Spellplague of 1385 DR, a group of pirates took control of the earthmote thanks to their skyship. They built a fortress there, renaming the earthmote Pirates' Skyhold, and hid within the fortress all the fortune they had amassed. Then, one day, all the pirates were killed in the most obscure of circumstancies and nobody was able to reach the earthmote thereafter. The Neverwintans believed that an evil dragon killed the pirates to steal their treasure and decided to make the earthmote his lair because nobody had the means to bother him there.
The evil dragon was actually Garrundar the black dragon. At one time, the sky pirates led by Bartholomew Blackdagger tried to capture Garrundar but they failed spectacularly and the black dragon pursued them back to their hideout. Garrundar took control of the lizardfolk that lived there and he weaved a powerful spell that cursed the pirates into undeath and bound them.