I began a new game. My character is on her way to meet with the greybeards .... and on the way (near Hillgrends tomb) on the bridge over the river, appear two 'ethereal looking' dragonlord dragons. LOL, I don't have a mod loaded or faved for dragonlord or castle.
Anyone know where they come from? Is this a new quest? I'm confused. After playing the start to the game so many times, this is the first 'out of the ordinary' event.