The Dipa Oil Lamp is the sixty-second treasure that can be found in Uncharted 2: Among Thieves.
The Dipa Oil Lamp is found in Chapter 18 - Heart of Ice. This treasure is located after you drop down from the big gears (there is 1 big wooden gear with a large portion missing) You will drop down onto another very slow moving gear and there will be a rope in the middle that you need to grab in order to proceed in this level. BEFORE you jump, look you will see the jagged rocks just to the right of the rope and you will see the glinting of the treasure. Direct your swing towards the treasure and grab when you are close enough.