At the top of the path, in view of the door Falfysson mentioned - which is still about 30 feet beyond - the path makes a hair-pin turn around a rock formation. The ledge at this point is about 9 inches wide and sloped about 25 degrees ... and like everything else, it is damp. To get around it, explains Batath, there are hand holds carved into the stalagmites; but Batath himself was surprised when a spider climbed out of one of these and over his arm. He nearly slipped. The drop, he adds - for he is describing this to Ahmet, who is resting at the place where the stairs look out into the cave proper - is about 160 feet.
Batath got to the door, which has no handle. There's an iron bar for wedging it open from this side, and there certainly is a keyhole. He'd suggest bringing people around the hair-pin with rope, but there's no where, really, to stand on the other side of the hairpin. he tried to hammer a spike into the limestone (you would have heard the banging), but it cracked and broke apart as he did it.
Still, that seems to be the only obstacle remaining.