CHICAGO (July 14, 2013)--A 6-year-old boy who spent more than 3 hours trapped underground after an Indiana sand dune collapsed on him was able to respond to "simple commands" upon arrival,
Comer Children's Hospital spokeswoman Lorna Wong said in a statement.
The boy was in critical condition and "has responded well to mechanical ventilation,” the statement said.
The boy was playing on the large dune Friday at Indiana Dunes National Lakeshore when he dropped into a hole.
The dune collapsed in on him while his family was trying to save him and that he was buried for more than three hours under 11 feet of sand, authorities said.
Michigan City, Ind., Fire Chief Ronnie Martin told WSBT-TV on Saturday that an air pocket saved the boy's life.