This story is incredible. This dog was trapped under a pair of stairs that were connected with the sidewalk. Apparently there had been made new construction in that part of the street. Maybe the dog had been sleeping under the stairs when the workers have paved the tiles, baring the poor pup alive.
For his good luck a man roughly heard the barf of a dog, but he was not sure since he good not hear clearly. There was only one way to find out. By removing the tiles one by one and digging under the stairs. Just as they thought, a dog was really trapped under there in total darkness, scared and traumatized to death.
Thankfully the dog is doing a lot better now. And he could not be more grateful to his saver, who took the trouble to do all that work to save him.