I think i found one mate.
Thailand, between numbers 2 and 3.
Once you have number 2 and you wall climb to the left on the main path you will have to slide down a slope then grab a bar to make the gap.
You will then get to a clearing where you are looking out to sea.
Look down and to your right and you will see it in a little opening on the cliff face.
Sorry if you have already got this buddy.