True Treasure

Find Sasan in a cave at Tarm Point, just North of Wintre Island and a bit south of the 9th dragon tear, the coordinates are approximately 4472 -0805 0035. Make a raft with some zonai devices and the boat next to Sasan , and cross the water to reunite him with Finley who's waiting for him at the other side of the cave. Be careful though as the water level will fluctuate, making the cross a bit more difficult than normal. There is a shrine at the end of the cave. the reward of this quest is an opal from both Sasan and Finley.