User blog comment:Merlaa/Where did Merlin go?/@comment-4683199-20121226205329

Nobody will ever know.... The last episode was SO RUSHED, even at 47 minutes (second longest episode by the way, after The Last Dragonlord, which was 48 min.) they still didn't have time to explain everything. They should have spread out the story over the entire series, instead of just focusing basically ALL major plot points into the last few episodes.

Anyway, my thoughts are that Merlin went to Gauis, told him that Arthur's dead, and then he just continues living near Avalon (without anyone knowing) until we see him in the future time. But I just made this up right now. I think you could potentially come up with tens of possibilities. So, you just make up one that you like best, and pretend it's ACTUALLY the right one.