Impregnable Defense

Impregnable Defense is a repeatable Daily Commission that can occur in various locations in Teyvat.
==Steps==
# Complete the challenge by protecting the Ley Line Monolith (0/1)
# Enemies defeated (0/X)
==Gameplay Notes==
* Failing the challenge will cause the monolith to be destroyed, only to be replaced by another monolith with no additional dialogue or achievements.
* Sometimes, extra assets spawn along the monolith to assist with combat, these include: Exploding Barrels , Hydro Ambers, Thunder Dwellings, Nimbus Gems and Thunder Sakura Boughs.
* Enemies do not drop loot or experience when killed.
==Rewards==
==Enemies==
===Dragonspine===
* At the ruins along the coast directly south of Starglow Cavern
** Challenge Target: Defeat 10 monster(s)
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Dragonspine Starting Location.png|Starting location
* Outside the entrance to Starglow Cavern that faces west
** Challenge Target: Defeat 10 monster(s)
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Dragonspine Starting Location 1.png|Starting location
===Entombed City - Outskirts===
* 
** Challenge Target: Defeat 10 monster(s)
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Entombed City - Outskirts Starting Location.png|Starting location
===Bishui Plain===
* At the road intersection below Wuwang Hill
** Challenge Target: Defeat 11 monster(s)
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Bishui Plain Starting Location.png|Starting location
* North of the Teleport Waypoint on the western archipelago
** Challenge Target: Defeat 12 monster(s)
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Bishui Plain Starting Location 2.png|Starting location
===Guili Plains===
* Directly east to the Teleport Waypoint overlooking Luhua Pool
** Challenge Target: Defeat 11 monster(s)
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Guili Plains Starting Location.png|Starting location
===Huaguang Stone Forest===
* Directly south of the Mt. Aocang Teleport Waypoint
** Challenge Target: Defeat 12 monster(s)
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Huaguang Stone Forest Starting Location.png|Starting location
===Qingyun Peak===
* West of the Statue of the Seven
** Challenge Target: Defeat 13 monster(s)
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Qingyun Peak Starting Location.png|Starting location
===Qiongji Estuary===
* In the plains west of the Teleport Waypoint above Mingyun Village
** Challenge Target: Defeat 11 monster(s)
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Qiongji Estuary Starting Location.png|Starting location
===Amakumo Peak===
* Southwest of the Teleport Waypoint east of Koseki Village
** Challenge Target: Defeat 14 monster(s)
* This variant includes a Thunder Sakura Bough and Thunder Dwelling near the monolith.
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Amakumo Peak Starting Location.png|Starting location
===Araumi===
* Northeast of the Teleport Waypoint in Araumi
** Challenge Target: Defeat 15 monster(s)
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Araumi Starting Location.png|Starting location
===Chirai Shrine===
* At the entrance gate of Chirai Shrine
** Challenge Target: Defeat 8 monster(s)
** Nearby Hilichurls and a Hydro Samachurl will become aggressive towards the monolith if they spawn in the area.
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Chirai Shrine Starting Location.png|Starting location
===Fort Mumei===
* Southernmost island of Fort Mumei
** Challenge Target: Defeat 15 monster(s)
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Fort Mumei Starting Location.png|Starting location
* Northernmost island of Fort Mumei
** Challenge Target: Defeat 8 monster(s)
** Wave 1: 
** Wave 2: 
*: 
Impregnable Defense Fort Mumei Starting Location 2.png|Starting location
===Seirai Island===
* North of "Seiraimaru"
** Challenge Target: Defeat 12 monster(s)
** This variant includes a Thunder Sakura Bough and Nimbus Gems near the monolith.
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Seirai Island Starting Location.png|Starting location
===Ardravi Valley===
* Southwest of Devantaka Mountain
** Challenge Target: Defeat 9 monster(s)
** This variant includes Pyro Boom Blossoms and Pyro Exploding Barrels near the monolith.
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Ardravi Valley Starting Location.png|Starting location
===Avidya Forest===
* West of Gandharva Ville
** Challenge Target: Defeat 11 monster(s)
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Avidya Forest Starting Location.png|Starting location
===Hypostyle Desert===
* Southeast of The Mausoleum of King Deshret
** Challenge Target: Defeat 9 monster(s)
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Hypostyle Desert Starting Location.png|Starting location
===Land of Lower Setekh===
* Southwest of the Teleport Waypoint directly west of the Eye of the Sands
** Challenge Target: Defeat 11 monster(s)
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Land of Lower Setekh Starting Location.png|Starting location
===Desert of Hadramaveth===
* Next to the Teleport Waypoint overlooking the rift
** Challenge Target: Defeat 9 monster(s)
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Desert of Hadramaveth Starting Location.png|Starting location
===Vissudha Field===
* Near the Teleport Waypoint directly west of the Statue of The Seven
** Challenge Target: Defeat 11 monster(s)
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Vissudha Field Starting Location.png|Starting location
===Court of Fontaine Region===
* Northwest of Echoes of the Deep Tides Domain
** Challenge Target: Defeat 9 monster(s)
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Court of Fontaine Region Starting Location.png|Starting location
===Belleau Region===
* South of Denouement of Sin Domain
** Challenge Target: Defeat 9 monster(s)
** Enemies:
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
*: 
Impregnable Defense Romaritime Harbor Starting Location.png|Starting location
===Mont Esus East===
* Near Teleport Waypoint
** Challenge Target: Defeat 10 opponents
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
Impregnable Defense Mont Esus East Starting Location.png|Starting location
===Tequemecan Valley===
* East of Huitztli Hill
** Challenge Target: Repel 10 tribal warriors
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
Impregnable Defense Tequemecan Valley Starting Location.png|Starting location
===Basin of Unnumbered Flames===
* East of the Statue of the Seven
** Challenge Target: Repel 9 tribal warriors
*** Wave 1: 
*** Wave 2: 
*** Wave 3: 
Impregnable Defense Basin of Unnumbered Flames Starting Location.png|Starting location
==Other Languages==
==Change History==
==Navigation==
es:La mejor de las defensas
fr:Mur d'airain
pt-br:Defesa Impenetrável
ru:Неприступная оборона
vi:Vững Như Bàn Thạch