Rescuers used a tiny camera to see if Larry Marek was behind the cave in debris.  No such luck.

Rescuers also pumped in air and water, through the holes they drilled.  They’re hoping that Marek is in the open space found behind the rubble of last Friday’s cave in.

They’re still trying to dig alternate tunnels.  They had to stop digging through the cave in rubble because the ground was unstable.