Map:Underground River Map (Atlas of Worlds)

This map is based on the first part of The Caverns in Act 2. It's a linear series of caverns connected by narrow bridges.

Map Type: Indoors

Underground River Map example layout

Boss Arena

An L-shaped cavern at the end of the map. Entrance seals when the boss is engaged.

Boss

It That Fell, based on Q'uru from The Caverns. Repeats the following sequence of maneuvers:

• Summons a small pack of Plummeting Ursas.
• Uses EarthquakeEarthquakeAttack, AoE, Duration, Slam, Melee
  Level: (1-20)
  Cost: 10 Mana
  Attack Speed: 75% of base
  Attack Damage: (85-150)% of base
  Effectiveness of Added Damage: (85-150)%
  AoE Radius: 18 / 28Requires Level 28Smashes the ground, dealing damage in an area and cracking the earth. The crack will erupt in a powerful aftershock after a duration. Cracks created before the first one has erupted will not generate their own aftershocks. Requires an Axe, Mace, Sceptre, Staff or Unarmed.Base duration is 1.00 seconds
  Aftershock deals 150% more Damage with Hits and Ailments
  
  Additional Effects From 1-20% Quality:
  Aftershock deals +(1.5-30)% more Damage with Hits and AilmentsPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. and jumps up, disappearing for a few seconds.
• Lands in the same spot and uses Earthquake again.
• Enrages for a few seconds.

It's highly recommended to prepare physical damage mitigation, including Immortal CallImmortal CallSpell, Duration, Guard
Level: (1-20)
Cost: (21-36) Mana
Cooldown Time: 3.00 sec
Can Store 1 Use(s)
Cast Time: InstantRequires Level 34Take less Physical and Elemental Damage for a short time. Consumes up to 5 Endurance Charges to lengthen the buff and further lessen Physical Damage taken. Shares a cooldown with other Guard skills.Base duration is 1.00 seconds
20% increased Buff Duration per Endurance Charge removed
This Skill's Cooldown does not recover during its effect
(25-34)% less Elemental Damage taken
(25-35)% less Physical Damage taken
15% less Physical Damage taken per Endurance Charge removed

Additional Effects From 1-20% Quality:
(1-20)% increased Cooldown Recovery RatePlace into an item socket of the right colour to gain this skill. Right click to remove from a socket., in case of being overrun by Plummeting Ursas. It That Fell's melee damage is comparable to one of those Ursas, but it has higher attack speed, especially when enraged. The safest way to deal with this boss is to clear summoned Ursas as soon as possible, wait out the enrage and use the limited time before it uses the Neo maneuver again to deal damage. The pack of Ursas is usually 4-6 strong and there's a danger of being surprised later on by those that didn't drop initially. A good way to avoid that is to walk around the edges of the Earthquake the boss leaves behind when jumping. There seems to be no limit to how many Ursas can be summoned.

Boss video

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Items found in this area

The following drop-restricted items can drop in this area.

Item	Drop Level
Glimmer of HopeGlimmer of Hope8Gold RingWhen you dwell in total darkness, even the faintest light may guide you out.	38
Lysah's RespiteLysah's Respite6Agate Amulet CorruptedSo many memories, so much pain in such a small token. Drown it in blood so you can forget.	23
Treasure HunterTreasure Hunter7Vaults of Atziri Corrupted"Don't worry, I know what I'm doing." - Toggo's Last Words	68

Item acquisition

Underground River Map is drop disabled.

Map variants

Item	Map Tier	Map Level	Map Series
Underground River MapUnderground River MapMap Level: 82 Map Tier: 15 Guild Character: 9Life, like still water, becomes trapped. Stagnant. Foul.Travel to this Map by using it in a personal Map Device. Maps can only be used once.	15	82	Necropolis
Underground River MapUnderground River MapMap Level: 82 Map Tier: 15 Guild Character: 9Life, like still water, becomes trapped. Stagnant. Foul.Travel to this Map by using it in a personal Map Device. Maps can only be used once.	15	82	Affliction
Underground River MapUnderground River MapMap Level: 82 Map Tier: 15 Guild Character: 9Life, like still water, becomes trapped. Stagnant. Foul.Travel to this Map by using it in a personal Map Device. Maps can only be used once.	15	82	Ancestor
Underground River MapUnderground River MapMap Level: 82 Map Tier: 15 Guild Character: 9Life, like still water, becomes trapped. Stagnant. Foul.Travel to this Map by using it in a personal Map Device. Maps can only be used once.	15	82	Crucible
Underground River MapUnderground River MapMap Level: 77 Map Tier: 10 Guild Character: 9Life, like still water, becomes trapped. Stagnant. Foul.Travel to this Map by using it in a personal Map Device. Maps can only be used once.	10	77	The Forbidden Sanctum
Underground River MapUnderground River MapMap Level: 77 Map Tier: 10 Guild Character: 9Life, like still water, becomes trapped. Stagnant. Foul.Travel to this Map by using it in a personal Map Device. Maps can only be used once.	10	77	Kalandra
Underground River MapUnderground River MapMap Level: 79 Map Tier: 12 Guild Character: 9Life, like still water, becomes trapped. Stagnant. Foul.Travel to this Map by using it in a personal Map Device. Maps can only be used once.	12	79	Sentinel
Underground River MapUnderground River MapMap Level: 79 Map Tier: 12 Guild Character: 9Life, like still water, becomes trapped. Stagnant. Foul.Travel to this Map by using it in a personal Map Device. Maps can only be used once.	12	79	Archnemesis
Underground River MapUnderground River MapMap Level: 69 Map Tier: 2 Guild Character: 9Life, like still water, becomes trapped. Stagnant. Foul.Travel to this Map by using it in a personal Map Device. Maps can only be used once.	2	69	Scourge
Underground River MapUnderground River MapMap Level: 76 Map Tier: 9 Guild Character: 9Life, like still water, becomes trapped. Stagnant. Foul.Travel to this Map by using it in a personal Map Device. Maps can only be used once.	9	76	Expedition
Underground River MapUnderground River MapMap Level: 69 Map Tier: 2 Guild Character: 9Life, like still water, becomes trapped. Stagnant. Foul.Travel to this Map by using it in a personal Map Device. Maps can only be used once.	2	69	Ritual
Underground River MapUnderground River MapMap Level: 69 Map Tier: 2 Guild Character: 9Life, like still water, becomes trapped. Stagnant. Foul.Travel to this Map by using it in a personal Map Device. Maps can only be used once.	2	69	Heist
Underground River MapUnderground River MapMap Level: 80 Map Tier: 13 Guild Character: 9Life, like still water, becomes trapped. Stagnant. Foul.Travel to this Map by using it in a personal Map Device. Maps can only be used once.	13	80	Harvest
Underground River MapUnderground River MapMap Level: 80 Map Tier: 13 Guild Character: 9Life, like still water, becomes trapped. Stagnant. Foul.Travel to this Map by using it in a personal Map Device. Maps can only be used once.	13	80	Delirium
Underground River MapUnderground River MapMap Level: 80 Map Tier: 13 Guild Character: 9Life, like still water, becomes trapped. Stagnant. Foul.Travel to this Map by using it in a personal Map Device. Maps can only be used once.	13	80	Metamorph
Underground River MapUnderground River MapMap Level: 75 Map Tier: 8 Guild Character: 9Life, like still water, becomes trapped. Stagnant. Foul.Travel to this Map by using it in a personal Map Device. Maps can only be used once.	8	75	Blight
Underground River MapUnderground River MapMap Level: 76 Map Tier: 9 Guild Character: 9Life, like still water, becomes trapped. Stagnant. Foul.Travel to this Map by using it in the Templar Laboratory or a personal Map Device. Maps can only be used once.	9	76	Legion
Underground River MapUnderground River MapMap Level: 76 Map Tier: 9 Guild Character: 9Life, like still water, becomes trapped. Stagnant. Foul.Travel to this Map by using it in the Templar Laboratory or a personal Map Device. Maps can only be used once.	9	76	Synthesis
Underground River MapUnderground River MapMap Level: 74 Map Tier: 7 Guild Character: 9Life, like still water, becomes trapped. Stagnant. Foul.Travel to this Map by using it in the Templar Laboratory or a personal Map Device. Maps can only be used once.	7	74	Betrayal
Underground River MapUnderground River MapMap Level: 74 Map Tier: 7 Guild Character: 9Travel to this Map by using it in the Templar Laboratory or a personal Map Device. Maps can only be used once.	7	74	War for the Atlas
Underground River MapUnderground River MapMap Level: 77 Map Tier: 10 Guild Character: ÉTravel to this Map by using it in the Templar Laboratory or a personal Map Device. Maps can only be used once.	10	77	Atlas of Worlds
Shaped Underground River MapShaped Underground River MapMap Level: 82 Map Tier: 15 Guild Character: ÉTravel to this Map by using it in the Templar Laboratory or a personal Map Device. Maps can only be used once.	15	82	Atlas of Worlds
Underground River MapUnderground River MapMap Level: 72 Map Tier: 5 Guild Character: ÉTravel to this Map by using it in the Templar Laboratory or a personal Map Device. Maps can only be used once.	5	72	The Awakening
Underground River MapUnderground River MapMap Level: 70 Map Tier: 5 Guild Character: ÁTravel to this Map by using it in the Templar Laboratory or a personal Map Device. Maps can only be used once.	5	70	Original

Version history

Version	Changes
2.4.0	Name changed from Underground Sea Map to Underground River Map. Most existing maps have been revamped to have more balanced monster composition, layouts, boss fights and rewards.