Anyone else think that the cave was MIB's location? The place where he kept up with Jacob's candidates and not necessarily Jacob's location like he stated to Sawyer. the cave is a dark place, the nemesis is the Man in black, the lighthouse represents a place of light and guidance and Jacob is supposedly on the side of the white. So the Lighthouse was Jacob's place where he kept up with his candidates and the cave was MIB's. At least thats what I'm thinking now.