Darren criss will be here. 6-year-old boy swallowed up by a massive sand dune that trapped him 11 feet under for more than three hours but he managed to make it out. Abc's ryan owens has the story. My... See More
Darren criss will be here. 6-year-old boy swallowed up by a massive sand dune that trapped him 11 feet under for more than three hours but he managed to make it out. Abc's ryan owens has the story. My friend's son, he got stuck in a sand dune and he's like under the sand and can't get him out. Reporter: A family friend calls 911 as onlookers try to dig out nathan woessner. Can anybody see him or completely covered by sand? Yes, my husband and his dad are trying to dig him out. Reporter: The 6-year-old was no match for the highest of the sand dupes at this national park along lake michigan. He'd climbed the dune some 12 stories high, an area off-limits to the public when it gave way. The sand just literally drank him up. For me to think about that, how the earth just literally consume your child and leave no traces. Reporter: Little nathan sank 11 feet. He was buried alive down there for more than three hours. Rescuers think there was an air pocket possibly created by an old tree. Perhaps its trunk had rotted out creating this void or this hole but that's still uncertain. Reporter: Whatever saved him the first responders who dug with shovels and heavy equipment now admit they were talking to even touching a little boy they weren't sure was still alive. I was talking to him, you know, just like I would talk to my own son. By then I got hold of his shoulders and was actually able to pull him out. It really didn't look good. Only thing you can think of that could be your kid. Reporter: His grandfather is a baptist minister and preached about miracles and now he believes he's been through one. At the end of the day the sand didn't crush him and by the grace of god we have what we have. Reporter: This morning, nathan remains in the children's hospital behind me. He's on a vent later because all of the sand in his lungs. Overnight his grandfather tells us he was squeezing family members' hands in response to simple commands and he says doctors are optimistic this little boy will make a full recovery. George.
This transcript has been automatically generated and may not be 100% accurate.