User blog comment:JohnnyN64/END/Natsu theories don't add up/@comment-97.112.55.109-20150325175245

Spoiler Warning:

Going back to you "Natsu is REALLY OLD/ Dormant END theory" i think the reason they couldn't leave the enchantment area was because, as you find out later in the manga, the dragons were "living" inside them. The dragons are old.