Find this railing in the northwest section of Mannet Point (see above map).
Jump down onto the beach and follow it north to the datacron.
Super easy to reach - just follow the beach to the location pictured in the map (coordinates -972, 8).
On top of Savrik Island. Start running up the island at the location in the image above (coordinates -717, -520).
Then it’s just a short jog to the datacron.