As the Burning Sun Sears Shadows

Name: As the Burning Sun Sears Shadows · Type: World Quest · Region: Natlan · Version Released: 5.5

Ancient Sacred MountainQuest Description: The Heart of the Sacred Mountain is infested by the Abyss. Its influence must be eliminated.Quest Objective: Enter the huge space beneath the volcanoQuest Objective: Talk to PaimonPaimon: Huh... Who'd have thought there'd be such a huge space underneath this volcano?Paimon: And it's wall-to-wall Abyss in here... Now that Paimon thinks about it, the Abyss covering the entrance probably crawled up from down here...O Chosen of Dragons, the power of blazing fire now rests within you...Go forth and vanquish the great enemy cloaked in shadow!Paimon: Huh. What's this fuzzy warm strength Paimon feels all over...?Paimon: Eh, that's a "later" question. Let's use it to send the Abyss packing, right here and now!Little One: Rawr!Quest Objective: Clear out the Abyss and release the Astral Assemblage(s)Quest Objective: Clear out the Oozing CoresQuest Objective: Destroy the Oozing Cores before they can escapeQuest Objective: Release all the Astral AssemblagesPaimon: What... are we supposed to do about that...Come, Chosen of Dragons... Let the... form your path...Paimon: Oh! There's a path. Let's go, then!Little One: Raaawr! Roawr!

See the "Quest Information" block above — unlock condition and quest chain per the official source.