This is the moment a group of tiny caterpillars formed an incredible 17-ft long convoy to cross a road.
Some 136 caterpillars made the single line and wriggled tip-to-toe across the road, linked by a thin silk thread which set their path.
And their safety-in-numbers approach had the desired effect as the slow-moving convoy was easily seen by motorists, who were held up for 20 minutes as it made its way across.
Bumper to bumper: this slow-moving convoy of migrating caterpillars was spotted in the Kruger National Park by Jamie Rooney, from High Wycombe, Bucks, who was visiting the famous Kruger National Park in South Africa.
Jamiewas in a jeep full of tourists when their driver slammed on the brakes just inches from the crawling caterpillars.
Jamie, 38, who works in website sales, said: "It was an incredible sight.
"We were out driving in Kruger National Park on a safari, when all of a sudden the driver shouted out and slammed on his brakes.
"He managed to stop just in time in front of this amazing trail of caterpillars, which was stretching across the road.
"Conservation is a massive deal in South Africa and the idea is that if there is any living creature in the road you have to wait patiently until it is safely across.
"We got out to get a closer look and counted 136 caterpillars in convoy, all moving together across the track.
"They were following a very, very thin silk thread on the ground and it took them about 20 minutes to get across the road safely.
"'Our guide had never seen it before, but he'd heard about it and explained they were migrating into the bush where they would disperse.
"'It's like the mass migration of bigger animals such as wildebeest, but on a different scale and pace.
'When they arrive in the bush, they turn into chrysalis and then butterflies.'
"It's a rare sight. It was an absolute joy to watch and a great experience to get down close and see it first handThis incredible convoy is the ultimate commuter train – a trail of tiny caterpillars heading off into the bush. An amazing 136 caterpillars wriggled top-to-toe across a road on their migratory route in Kruger National Park, South Africa.
."Hold up: Traffic stopped while the slow-moving caterpillar convoy crossed the road.