Recently, on the 52nd anniversary of Doctor Who, I decided to watch "The Day of The Doctor" again...for like...the 10th time or something.
Something that has always bugged me because it's not entirely clear, is how the Doctors entered the "Gallifrey Falls" painting in order to get out of it inside the Black Archive.
According to the episode, the painting is a sample of "Timelord art", a moment in time frozen with a stasis cube or something. We even saw an example of how the Zygons were using that same thing to invade the future from the past.
So, if I understood correctly, the Doctors had to fly to Gallifrey to be present when the "picture", so to say, was taken. But Gallifrey was still time-locked at the time, unless The Moment unlocked it like she did in the climax of the story, but it wasn't explained.
TL;DR: The title. How did the Doctors manage to enter the painting when they couldn't land the TARDIS in the Black Archive?