The Sinkhole Delve Guide: Location, Boss Strategies, and Trash
This page will cover everything you need to know about the Sinkhole Delve in the War Within Expansion, including strategies for events, trash, and bosses.
Getting into The Sinkhole
The Sinkhole is a Delve located in the middle of Hallowfall, Khaz Algar.

This guide will be providing the all the specifics you need to complete The Sinkhole across all tiers of difficulties (from Tier 1 to Tier 11). We will cover delve events, optional bosses (rares), as well as end of the dungeon boss and their abilities. If you would like to learn about the rest of the Delves in Season 1, please see our overviews linked below.
The Sinkhole Layout

Events in The Dread Pit
Event #1 — 0/5 Leviathan Manipulators slain
Trash Mobs in this Area
- Interrupt Kobyss Witherer's
Abyssal Surge cast.
- Beware of Kobyss Bonechewer's
Scavenge buff, any spare interrupts should go for
Throw Junk cast.
- Watch out for the amount of Slippery Syphoners you pull, although they have lower
health, they will
Crunch you and cast Corrosive Bile.
- Interrupt Leviathan Manipulator's
Necrotic Bolt and avoid their
Defiling Breath frontal. If you engage with Kobyss Necromancer they have exactly the same abilities as the Leviathan Manipulator.
- Beware of Kobyss Trickster and its uninterruptable
Illusive Step cast, he will create an illusion that will continue to attack you (Pale Illusion) and hit you with
Cleave frontal cone ability.
- Kobyss Spearfisher are the worst mob in this area due to their
Spearfish cast, which grips you in melee and immediately hits you with Slashing Rend.
Event #2 — 0/7 Leviathan Balt destroyed
Destroy 7 Leviathan Balts.
Leviathan Caller Boss Guide

- Interrupt
Abyssal Surge cast.
- Focus and kill any Slamming Tentacles arround the boss, else he will gain an immunity to any damage source. It is best to try your best and cleave them with Leviathan Caller.
Changelog
- 21 Feb. 2025: Reviewed and Updated for Season 2.
- 03 Aug. 2024: Page added.
This guide has been written by Petko, one of the top Mythic players of all time. He has accomplished several Europe- and World #1 Team and Solo Seasonal rankings with multiple specialization and classes. Moreover, he competes in the MDI and streams his runs live on Twitch, and shares his personal opinions on YouTube and Twitter.
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