What is behind the statue in majula
Solution 1:
There are only 2 statues in this area, one is in Majula, the other in Things Betwixt (if you are playing SotFS)
Majula: This statue is Rosabeth of Melfia, and she blocks the entrance to the Shaded Woods. You will need to free her, if you want to progress through the game.
Things Betwixt: There is now a statue found in Things Betwixt, of an undead. This statue blocks the way to an Estus Shard. I'm not sure which one was moved, but I'd say it is one of the intended 12 needed to completely upgrade your Estus Flask (Which is redundant, because you can simply get them in ng+).