Last Will and Testament

As you're looking at the dead men hanged by the fallen tree, go left and after engaging some darkspawn you should see a fight between a pack of wolves and some darkspawn.You should now see a corpse of Missionary Jogby.As you pick up the item Rigby's Last Will and Testament you will be given the quest.

Background
Quest states: "You found the last will and testament of someone named Rigby on a body in the Korcari Wilds.Find the cache mentioned in the will, and take it to Jetta in Redcliffe.

Walkthrough
Head as much west as you can and you should see some ruins.At their base 2 tents, a chest and a hidden cache. Now you have 2 options. 1.You open the lockbox -> you get an ammulet in your plot items 2.You take the lockbox to give it to Jetta