A driver who stopped to help another motorist whose car crashed on the M25 had to be rescued by firefighters when he fell down a 20ft hole in a field.
Crews from Dartford and Swanley called to the accident near Dartford, Kent, early on Wednesday heard the man shouting from the bottom of the shaft.
He was able to climb out using their ladders and had only cuts and bruises.
The first car driver, who had crashed through fencing into the field, had to be cut free from his vehicle.
Paramedics treated both men at the scene for their injuries.
David Boakes, Dartford watch manager for Kent Fire and Rescue Service, said the 20ft (6m) shaft had been covered up with corrugated iron sheeting.
"The good Samaritan had seen the crash and stopped to help but stepped through the sheeting." he said.
Firefighters used short ladders across the top of the hole to spread their weight and another ladder to reach the man.