Journey Through the East Sylphwood Forest:
Probably the easiest way to begin this journey is to quick-travel to the obelisk outside the Raven's Gate (assuming you were there before), or any other method of your choice to bring you back to the road leading south of the Yoma River Headwater.
|You can quick travel back to this obelisk and head southeast (the opposite of the mage in the screenshot) to start the journey through Sylphwood toward Harpoon Bay...|
|Sparkling Wonder is effective to keep the Rift Harpies at a distance without injuring them.|
You'll also still be able to return to the north after making the journey to Picaroon Isle: You won't be able to use quick-travel all at once between regions that are extremely far away from each other, but if you're an Elemental mage with the Portal spell, you'll be able to get around this easily by setting any portal anchor back in the north, and teleporting back and forth between Picaroon and the main continent (as well as optionally Durnore, if you want to have portals keyed to all three areas that can't be quick-traveled to as easily).
|Setting sail from Harpoon Bay will take you to the isle on the edge of Amarith|
|Making the journey to Picaroon automatically triggers the next "Destroy the Crux" Quest.|