© Roger Myren/NRK
Anders Helstrup in his wing suit.
One summer day in 2012, Anders Helstrup and several other members of Oslo Parachute Club jumped from a small plane that had taken off from Østre Æra Airport in Hedmark.
Helstrup, wearing a wing suit and with two cameras fixed to his helmet, released his parachute. On the way down he realised something was happening.
"I got the feeling that there was something, but I didn't register what was happening," Helstrup explained to NRK.no.
Immediately after landing, he looked through the film from the jump, which clearly showed that something did happen.Something that looks like a stone hurtles past Helstrup - clearing him by only a few metres.
Search party in the forest
Later that day, Helstrup returned to Oslo. But he could not stop thinking about his strange experience, so he took time off from work to go back to the Rena area for a couple of days to look for the stone - but with no luck.
"We continued the search during the summer. I got my girlfriend, family and friends to join the project. We searched the forest and kept looking."