Search for Captain Greymast by making your way through the dungeon (begin by heading west from entrance)
Pterotrainer Yu'lua ( -3555, 10, -71 ) : will occasionally summon a pterodon to attack that can stifle you. Potentially will use a knockback, so be sure your back is to a wall unless you enjoy a long trip back up from the waters below.
Defile the statue at -3439, 67, -144
High Priest Hamanu'akaloa ( -3396, 12, -83 ) : Summons "Living Lava Golems" frequently during the fight. Position these golems to face away from anyone else (group/merc) and when you see them casting lava breath, stand behind until it's done. You'll want to take the golems out as soon as possible.
Fiery Effigy of Clotl'thoa ( -3344, 10, 72 ) : Has a buff, Lavatar, which makes him stronger the longer he stays in the lava-infused throne area. If you pull him out of the lava, he loses his Lavatar buff but receives a buff for 75% damage reduction. He summons Allu'thoa lavacrafters periodically throughout the fight. They have low health but a potent direct AOE and need to be burned down. If he's out of the lava he also summons Allu'thoa hunters, which have a fair amount of health but no special abilities. Fight him in the lava until his Lavatar buff makes him unmanageably strong, then pull him out of the lava and wait for him to debuff while focusing on adds. Once he's debuffed, put him back in the lava and hit him as hard as possible. Repeat until he's dead.
Use the pterodactyl at -3328, 10, 55 to zone out of Zavith'loa
Return to Nuwat in Merinep
Speak to Seep at -1009, 97, -165
Talk to Nuwat at -566, 8, -583
This ends the pygmy part of this quest, but opens up a new quest from Gowlin at -567, 8, -582 , But Can They Open Doors?
Speak to Researcher Aillena, at 1231, 18, 1256 in Sapswill on the Isle of Refuge