CLIFF CALAMITY
Ryan Campbell and his friends loved camping, and, in 2014, were at Red River Gorge, Kentucky, US.
About an hour after Ryan, then 27, fell asleep in his hammock, his mates watched him get up and walk towards the edge of the cliff near their camp. They yelled out, telling him to be careful. But Ryan was sleepwalking and plunged straight off the edge of the 18-metre drop.
A rescue team was called