You've finally reached the endgame. Your build is humming, your resists are capped, and you’re starting to look at those Mythic Uniques with a hungry eye. But there’s a specific spot on the map—a jagged little icon in the desert—that basically gatekeeps the best loot in the game. That's the Gaping Crevasse.
Honestly, it isn't much to look at from the outside. Just a hole in the dirt south of Gea Kul. But inside? That’s where the King of Maggots waits to turn your hardcore run into a ghost story. If you’re hunting for a Harlequin Crest or a Grandfather, you’re going to be spending a lot of time in this damp, poison-filled pit.
Where Exactly is the Gaping Crevasse?
Finding the place is the easy part. Head over to Kehjistan. Specifically, you want to teleport to the Gea Kul waypoint. From there, hop on your mount and ride southeast. It’s tucked away in the Hakan’s Oasis area. If you’ve hit the southern edge of the map, you’ve gone too far.
The entrance looks like a standard dungeon crawl, but the stakes are way higher. You aren't here for a random legendary or some glyph XP. You are here for the altar at the end.
The Summoning Tax: What You Need to Bring
You can't just walk in and demand an audience with Duriel. The game makes you work for it. To summon the boss at the Pestilent Altar, you need specific materials that only drop from other endgame bosses. It’s a ladder, basically.
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- Shard of Agony: You get these from Grigoire, the Galvanic Saint. He lives in the Hall of the Penitent in the Dry Steppes.
- Mucus-Slick Egg: These are dropped by the Echo of Varshan, who’s hiding in the Malignant Burrow right next to the Tree of Whispers.
For a standard run, you’ll need two of each.
If you’re feeling brave (or just want better odds), the Tormented version requires the same mats plus Stygian Stones. These stones are the real bottleneck. They drop from high-level Pit runs, World Bosses, and occasionally from Infernal Hordes. Don't waste them unless your build can actually handle a level 200 boss fight.
A Quick Note on Farming
Don't just solo these if you can help it. Join a "rotation" or a "rota." If four people each bring enough mats for one summon, you get four kills for the price of one. It’s the only way to farm efficiently without losing your mind.
Surviving the Maggot King
Once you drop those mats into the altar, Duriel shows up. He is gross. He’s also the primary source of poison damage in the game.
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If your poison resistance isn't at the 70% cap, don't even bother. Pop a Potent Elixir of Poison Resistance before you click that altar. It makes the difference between surviving a hit and watching your health globe melt in two seconds.
He has this annoying habit of burrowing into the ground. When he does that, stay mobile. He’ll pop back up and try to flatten you. Also, watch out for the "Pangs of Duriel." These are smaller maggots that spawn during the fight. If you don't clear them, they’ll clutter the arena and make dodging his big slams nearly impossible.
Why Everyone Obsesses Over the Loot Table
Why put up with the grind? Simple. The Gaping Crevasse is arguably the most important spot for character progression in Diablo 4.
Duriel has a unique loot table that includes:
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- The Grandfather (Two-Handed Sword)
- Harlequin Crest (The legendary Shako)
- Andariel’s Visage
- Ring of Starless Skies
- Melted Heart of Selig
These items are build-defining. A Druid without a Tempest Roar feels like half a character sometimes, and guess where that drops? Right here. Even if you don't get the "purple" Mythics, the sheer volume of 925 item power gear is worth the trip.
Pro Tips for Efficiency
- Resetting the Dungeon: You don't have to ride back from Gea Kul every time. Once the boss is dead and the loot is in your bag, use the "Leave Dungeon" emote. Once outside, open your map, expand the quest/dungeon log on the left, and hit "Reset Dungeons." It teleports you right back to the entrance.
- Salvaging for Sparks: If you get a Mythic you don't need, don't just let it sit in your stash. Salvaging one gives you a Resplendent Spark. Get four of those, and you can just craft the exact Uber you want at the Alchemist.
- The "Bubo" Area: The final room is called The World’s Bubo. It’s a tight space. If you’re playing a ranged class like a Sorcerer or a Rogue, don't get backed into the corners. The poison pools will stack up and you’ll run out of space to kite.
The Gaping Crevasse is basically the office for serious Diablo 4 players. You clock in, kill the bug, check the loot, and repeat. It might feel like a chore after the 50th run, but that one time the screen flashes purple makes the whole thing worth it.
Actionable Next Steps:
Check your inventory for Malignant Hearts and Living Steel right now. If you have enough, run Varshan and Grigoire twice each to secure your first set of Duriel mats. Make sure your Poison Resistance is capped at 70% before heading to Kehjistan, and if you're low on gold, sell the non-ancestral gear from the dungeon run to help cover your gear tempering costs.