In a freak accident, a 4-year-old boy died after a tombstone fell and crushed him, just as he and his family were taking photos at a historic cemetery in Park City Utah.

Carson Dean Cheney and his family were visiting from the nearby town of Lehi. They went to the Glenwood Cemetery last Thursday to take some photos, when Carson inadvertently held on to a nearby headstone which dislodged and fell on the boy. The tombstone was 6 feet tall, 4 inches thick, and weighed hundreds of pounds.

It took three men to lift the slab off the boy who suffered fatal injuries to his head, chest, and abdomen. He was taken to the nearby Park City Medical Center where he died shortly after.

“There’s still so much disbelief and sorrow and anguish,” Carson’s grandmother Geri Gibbs said. “We just keep waiting for the door to open up and Carson to come through, a happy little boy.”

Carson’s father Zac Cheney does photography as a side job, and was shooting portraits at the cemetery.  Since the rest of the children were being unresponsive, Carson tried to make them laugh by playfully poking his head behind the tombstone when it fell on him.

“Carson passed away while trying to make others smile,” a family friend said.

Carson was just about to start kindergarten, loved to ride his bike and was “full of life.” A funeral has been set for Tuesday.