There are 4 spots around Galakrond's Rest in Dragonblight that respawn fast (approx 60s) and contain relatively tight formations of melee mobs that are ideal for an AE dps class + healer combo.
The mobs, 72-73 nonelite Wastes Digger, will hit for about 150-350dmg and give out 900-950xp each (solo). Each site has approximately 10 mobs.
I usually park my 2boxed healer away, and pull the mobs back to him with proximity aggro while mounted.
They drop 10-20s each and a little frostweave.