I'm surprised no one has mentioned:
https://wiki.project1999.com/Cazic_Thule_Alligator_Pit
https://wiki.project1999.com/Cazic_Thule_Alligator_Hall
I just took my druid up to 38 there and it's really great XP for animal charming. Plus the only time you see anyone else there is if some high-level is killing the alligators for mage focus items (and even then you can usually give them the mage focus items you've looted while leveling and don't care about to make them go away).