God Of War Ragnarok Under The Rainbow Treasure Map Solution
You will first have to get the "Under The Rainbow" treasure map. This can be found behind the left ruin at Noatun's Garden.
As for the buried treasure. You will have to go to Goddess Falls and clim up 2 sections of the cliff in front of where you dock. Then just go right and stick to the edge to find the treasure.
Video Guide
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