Doncellius wrote: »1. Yeah, sort of..... but technically no.
2. Any group, except when in AvA zones, can be cross alliance.
3. Run Trials, rather than group dungeons.
4. Cyrodiil (actually the Imperial City located in the center of Cyrodiil) contains two dungeons. Imperial City Prison and White Gold Tower.
You can only run Group Dungeons with (up to) 4 players in total.
The Group Dungeons:
• Crypt of Hearts
• City of Ash
• Darkshade Caverns
• Direfrost Keep
• Imperial City Prison
• White Gold Tower
• Ruins of Mazzatun
• Cradle of Shadows
• Fungal Grotto
• Elden Hollow
• Banished Cells
• Vaults of Madness
• Selene's Web
• Tempest Island
• Spindleclutch
• Wayrest Sewers
• Volenfel
• Blackheart Haven
• Arx Corinium
• Blessed Crucible
You can run Trials with (up to) 12 people in total.
• Hel Ra Citadel
• Aetherian Archive
• Sanctum Ophidia
• Maw of Lorkhaj
Trials are essentially much tougher versions of Group Dungeons, but there is far more to it.
Hope this helps!