Speak to Ley-Keeper Velania at the West Sanctum in Eversong Woods.
Since you're here, <name>, I've a favor to ask you. Ley-Keeper Velania's apprentice dropped by earlier to ask for assistance. Apparently there's some malfunction happening at the West Sanctum. I've been a bit busy entertaining our... most pleasant... dwarven guest. See if you can give her a hand. You'll find the West Sanctum southwest of here.