Are there popular, high-level Undead areas to level at in Velious?

[Sarleon8503]

In Velious, there are only 2 spots with undead that I can think of.
Tower of Frozen Shadow & the Shades in Velkator's Lab past the lower dogs.

For Practice City of Mist is great and Karnors Castle basement isn't bad either. If you want a more open area, you can try charming by the rotting skeleton camp in Dreadlands if just for learning - open area and outside but exp will be less due to greening out and less exp.