Eko says he'll tell the monsignor that there is no miracle. "Your daughter is alive. This is all that matters," he says. He turns and goes to get back in his car, but looks back and sees Charlotte staring at him through a window. "Hmm," he thinks. "I've confirmed that this isn't a miracle, but that was before she creepily stared at me. There must be more to this story."
Eko's climbing up the cliff, with Locke helpfully yelling "be careful!" like maybe this is what could be put on the tombstones of everyone Locke gets killed: "I told him to be careful." To make the climb more dramatic, Eko does the requisite loses-his-grip-and-almost-falls bit, and then keeps going. Locke keeps yelling "Eko!" at him, like shut up and let him climb, Locke.
Eko gets to the top, stands up and looks around, and manages not to fulfill Locke's dream, at least not yet. The camera circles around the landscape. Eko's climb has been brought to you by Tourism Hawaii. Locke yells up, asking him if he sees anything. "I don't see nothing," says Eko, a double negative that turns out to be accurate when he looks at the field in front of the cliff, and indeed does see something: a brown semi-circle of dirt where nothing seems to be growing. On first viewing, it looked to me like the top half of a question mark, because on my television (one of the old non-definition models) it looks like the circle doesn't complete itself, and indeed on the right-hand side it looks like the circle breaks downward, putting the crashed plane over where the dot would be. Others are arguing that it's a circle, based on the logo of the hatch we're going to find. Reasons to consider this hypothesis: Locke's crappy map, which could mean that they went off course and haven't found the question mark at all, just another station in the octagon. But if the ground has been salted, as we'll find out it has been, to mark this hatch, why doesn't it actually, you know, mark the hatch? Why mark a hatch with a big circle, if the entrance is actually outside the circle? Wouldn't the middle of the circle be the location you're trying to point out? Then again, why mark something with a big question mark if you know what it is? An exclamation mark would work just as well, and be easier, not to mention easier on the salt supply. I guess it doesn't matter, but the fact I'm wondering about this so much must mean I'm enjoying this episode more than most lately. So, in the end, weighing everything I've looked at, and considering the fact that it doesn't actually matter, I'm deciding it's a question mark. It's the name of the episode, after all.