I'm writing/running a campaign for a few friends. Right now, they are in Waterdeep. I'd like to guide them to go to Skullport, but I'm having trouble figuring out how to get there. I know it's in the Underdark, and I know it's basically below Waterdeep...is there...like, stairs or something? I read about the Skull Island portal which I can use if that's all I have to work with, but it's not really how I figured they'd get there.
Now that I think about it, the Skull Island portal would be pretty cool, but I'd still like to know my options, and Google has not been helpful in this regard. I'm hoping you guys could help me.