**UPDATED** With Google Map Potential Location
Thanks to Jyrki for the heads up, but it looks like Sam is looking at the Sunda Trench area near Indoneasia and Christmas Island.
(Click to Enlarge)
Here is a screencap from a previous part of the game showing a quick flash of some islands on Sam's computer. Is this another potential clue?? Are these islands near the Sunda Trench?
Thanks to Anna for the screencap.