There is a gladiator camp set up outside the entrance† to Ald Carac. A Dunmer hunter, Researcher Dayas was studying the ruin before the gladiators showed up, and is annoyed that they have interrupted her research. Battlemaster Rivyn, a small group of gladiators, and an elite gear vendor are also present.
Although the gladiators treat the camp as being at the entrance to the battleground, players cannot access the battleground directly and must go through the Activity Finder menu.
A map showing the capture points on Domination
A map showing the flag locations on Capture the Flag