Revenant

It has begun again, far beyond the grasp of man's reluctant reach, she stretches forth her tiny spindled fingers through the earth, receiving her child into the unyielding garden once more. He falls upon the dark glass that was once his window and slips through the dull depths without breaking the speculum, spying a spectrum of boundless light in the 490 fathoms of His dark channel. The eternal exile returns and makes his bed, and a dog is crying tonight in Mobile also. Puzzle me the right answer to that one...