Me too! We had a power outage while I was in the Echoing Path. Restarted and ran through the Echoing Path, killed and cleared the entire level, several time, and I can not proceed to Cordanon Mines. I'm stuck at the same place as the OP's picture. The quest idicator above Echoing Path on the map doesn't go away. When I exit the end of Echoing Path, I can activate the portal, but not enter the next level. If I end the game, it makes Me clear the level before Echoing Path again, but still wont let me through after clearing Echoing Path. What a drag. That will stop game play.