Vets hating wasting their knowledge on issues like this. I'll humor it because I'm in a good mood.
The guide by that slouch (keltin) indicates both chests are just beyond each of the chests to the left and right of the entrance. You need to got the extreme left/right (just beyond the previous chests on the list) and jump up on to the temple itself and pull yourself up. You should have inferred that much. Review a video if you need to see it happen.
When you're interested in the Challenges, VH or 'going beyond'...we'll be around.