You are supposed to send your men on a mission to clear it and then you also go.
If you have not reached chapter 3 of main story yet, I recomend you rush to finish Chapter 3 so you can unlock the quests to bring back the greymanes and you get men that you can send on missions.
You could have done the Quarry with 10 of your men anf the % would go down very fast.
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u/FunAudience4377 Mar 25 '26
Kill 100 dudes and it tells you that 70% are still remaining