Scuabtuinne 'For The Hoard' Quest Exploration EXP.

It doesn't seem to be listed, but doing the For The Hoard quest gives you an amount of Exploration EXP depending on which of the 3 choices of artifacts you decide to use to complete the quest. I've tested Gemstone and Broken Ruins Knickknack and the values are 80,000 Exploration EXP for the Gemstone and 60,000 Exploration EXP for the Broken Ruins Knickknack. This isn't a reward from completing the quest, but instead instantly given to you upon giving the item to the Far Darrig. I haven't tested the Tattered Nautical Chart, though so I'm not sure what the reward is. Also, I'm not sure how would be a good-looking way to add it into the quest data page.

I did the Tattered Nautical Chart once, I remember it giving me 40,000 Exploration EXP when I did so.