Larian Studios Forums Divine Divinity (English) General Bring on the treasure quest

I dont understand what to do next i have all 4 treasure maps

The 4 maps point to a treasure cave in the Dark Forest. See the topic below for a description, but the screenshot links are all broken.
If I have time this weekend I'll recreate the screenshots, but in the meantime let be know if any of the descriptions are unclear.

Larian/Silver armour-screenie-spoiler

GameBanshee has a description with some screenshots here and here.