When Bilbo opened his eyes, he wondered if he had; for it was just as dark with them shut . . . He could hear nothing, see nothing, and he could feel nothing except the stone of the floor.Very slowly he got up and groped about on all fours . . . and he was far from certain even of his direction . . . He guessed as well as he could, and crawled along for a good way, till suddenly his hand met what felt like a tiny ring of cold metal lying on the floor of the tunnel . . .