Requirements: Never recruit Nathaniel Howe in Dragon Age: Origins OR Choose the Hero of Ferelden background
Go to Hightown and find Yevhen in the northeast corner of the city. Agree to help his sons to start the quest 'Fool's Gold' . Leave Kirkwall and enter The Deep Roads, an all too familiar place. Follow the path and defeat the Darkspawn that attack then continue forward until you reach some rubble . Further to the east you will find Emrys who pleads with you to save his brother. Go south to fight some Spiders then loot the pile of bones to the east for the Sash of the Tirashan .
Head north to find Darkspawn Emissaries attacking Merin. Defeat them and send Merin home then make your way north looting the pile of bones before finding Iwan's body. Loot the body for the Golem Control Rod and continue down the path. Loot the pile of bones and continue east to a Golem, use the control rod.
Head north and help Iwan take out some lowly Darkspawn. In the end you get a Golem Control Rod to be used on the Golem to the east. You should go back and check on Merin but he wasn't so fortunate.
Go north and dismantle the Golems along the way then head west to fight a Darkspawn Emissary and an Ogre. Loot the pile of bones then go north to find a treasure cache , Lyrium-Laced Bilge Hoop , rubble , and chest - complex containing Zoey's Battered Horde-Kickers . The Treasure Cache will contain the unique items Potency and sundarin Thunder if you chose to save Iwan but you get more gold out of saving Merin. Loot the pile of bones on your way back to Hightown and talk to Yevhen to finish the quest.