Eradication Site is a location in Dragon's Dogma.
A war-torn battlefield near the center of the western Gransys region. It can be found by heading due west from The Ruins of Aernst Castle.
The remains of a battle are found here, including Ox carcasses, and torn pennants. Sometimes a captive cage may be found here on a raised stone platform - when Goblins take a prisoner here.
You can encounter Griffin in this place at morning-daytime. In Post-Game, a Cockatrice will spawn here.
North of the Conquerer's Sanctuary, a pawn may mention that it was not always in goblin's nature to attack humans.
There isn't anything to be found here...by day. By night, occasionally the whole captive cage spawns here -as a part of Leave No Prisoners quest, and also two Weapon/Armor piles and a chest.
Weapon/Armor pile by the tree next to the cage may yield, apart from common items: Hemp Shirt, Rusted Daggers, or Angel's Periapt.
Weapon/Armor pile far to the south, close to the smoldering pile of debris may yield, apart from common items: Ironclad Staff, Rusted Warhammer, Angel's Periapt.
The chest, by the cage,may contain: Blast Arrow, Sleeper Arrow, Silencer Arrow, Blinder Arrow, Poison Arrow, Oil Arrow, or Coin Pouch.
Note that all the loot sources will vanish once the quest no more: completed, failed or neglected, if one will move away enough. For specific loactions see a map here
"This place must have seen a ferocious battle."
"Castle walls? Or ruins of such?"
"The poor beast... Goblin handiwork, like as not."
"Monsters prowl land and sky alike. Take care you're not caught unawares."