The Violet Stand is a night elf ruin taken over by warmages of Dalaran. The Teleport to Dalaran Crystal is located within a bubble shield just like the one at Transitus Shield. Corpses of blue dragonspawn, presumably from the nearby Azure Front litter the ruins. Violet Stand is located just to the northwest of the Azure Front in southwest Crystalsong Forest. To the north is the Great Tree and the Decrepit Flow coming from Icecrown.
Players who travel to Dalaran by land for the first time my be a bit confused, as the road through Crystalsong Forest ends at a small, empty plaza right under the city. This is not Violet Stand; Violet Stand is just south of the plaza across the river.