Ask Revend to blow it open.
From Create Your Own Story
"Alright, here it goes, young hero..."
Revend's eyes suddenly begin to glow a bright blue that illuminates the dark room around you, which you can see is a pretty empty but large circular room. Turns out that the trap you almost tripped wasn't the only one in the room.
He then suddenly blasts blue, luminous, shining energy at the colossal door in front of you. It blasts open to reveal a small hallway that you can't seem to see the end of, as wood bounces off the walls.