Check the chieftain dwelling

Using your invisibility you enter the village, and you manage to reach the chieftain's dwelling easily.
There is a long corridor, and he's drinking alone, posing his feet on a female human **** who has piercings on her nipples and genitals. She eats food rests from a pet bowl. The goblin laughs and plays with his golden crown and his white beard.

He didn't notice you, you can try to **** him, or you can prepare to fight and defy him.

If you **** the chieftain, you can search the dwelling for useful items to complete your quest.
If you defy him, you can earn the respect of the tribe, and you can **** them to reveal the location of the stone or help you.