Colossal Summit

Similar to Uber Tristram you cannot open a town portal in the Colossal Summit area.

Blizzard HOTFIX 1 – February 26, 2026 – 3.1.1.2

Bug Fixes
Fixed issue with the Colossal Jewel not dropping after the Uber Ancients fight if a player enters and exits the portal during the fight in online games.

Each of the Uber Ancients in the Colossal Summit has the ability to reduce one of your resistances by 100. Uber Talic reduces your fire resistance, Uber Korlic reduces your cold resistance and Uber Madawc reduces your lightning resistance. To compensate for this you should aim to raise these three resistances to 275.

When you do physical damage and you are not sure if you can beat the Colossal Ancients and you want an extra boost, do this:

1. Bind The Smith (in Barracks in act 1).
Yeah, The Smith, NOT Hephasto. The Smith's stats don't matter.

2. Then go to The Hellforge as often as necessary to find a very strong Hephasto (ideally he has Cursed and Fanaticism Aura).

3. When you have found him, do not bind him yet, but go to town, open the Portal to the Colossal Summit and make preparations ( Belt with Full Rejuvenation potions etc.)

4. Consume your Smith for a massive boost to damage and physical damage reduction.

The Smith
Physical Damage Received Reduced By 20%
+180% Enhanced Damage
Level 15 Holy Fire Aura

5. Go back through your TP to The Hellforge and bind Hephasto.

6. Now go to the Colossal Summit and fight the Colossal Ancients!

Good luck!

Changes to colossal/uber ancients with patch 3.2:

Blizzard wrote:

Colossal Barbarian summons continuously spawn, up to a cap of 5.
Increased the Magic Resistance of each Colossal from 50% to 75%.
Increased the damage of Talic's Whirlwind.
Increased the damage of Talic's Fire Twisters.
Increased the damage of Korlic's Cold Fissure.
Increased the damage of Madawc's Thunderstorm.

Just had a kill with no jewel drop after the bug fix was released. It does seem like this can still happen.