Talk:School Raze - Part 2/@comment-26423071-20180909115956/@comment-1031724-20180909173247

It's not hell, it's just a prison resembling Greek hell. And Celestia needed to wield the Elements at half power to send Nightmare Moon there. I think the reason they did that was because of how serious a threat she was. She could have destroyed all magic in Equestria forever. Once the Crystal Heart lost its power, the snowstorm would destroy the Crystal Empire. And she nearly trapped the Mane 6 in Tartarus forever. Good thing the Tree recognized the Young Six, and Pinkie Pie used her annoyingness to get Tirek to help them escape. She may be a filly but aside from her views on friendship she is intelligent too.

Maybe we'll get a backstory and redemption in Season 9.