Shadra'Alor is a settlement built by the forest trolls of the Amani Empire in the Hinterlands. Shadra'Alor was originally controlled by the Witherbark tribe as their main settlement but after the Cataclysm it was occupied by the Vilebranch tribe. The loa Shadra could be summoned here.
In the RPG
It is very likely the settlement is named after the loa Shadra. Its name could mean "Temple of Shadra" or "City of Shadra".