Left.

The man had dragged Dago to the left of the castle to find the hole, so he figured he’d try to stay as far from it as he could have. He wandered down the tunnel, carefully avoiding large rocks and shallow dips in the ground. He began to notice the tunnel getting wider and taller. He didn’t have to worry about his head brushing the top anymore.

Soon, after what felt like a very long time walking, he found himself in a huge opening that was dimly lit in the tunnel. He could make the outline of a tree with wide, hand-like leaves and a few pear-like fruits hanging from the low branches. He also could hear the faint trickle of water coming from behind the tree.