This 3150 m long tunnel in Russia is the longest in-city tunnel of Europe. There is a river running over it and water leaks at some points. When the temperature reaches -38 degrees like it did this winter, the road freezes and the result is the attached video taken during a single day with the tunnel camera.
I've seen the Russian tunnel one before (a bunch--I love things smashing into other things), and have never been able to figure this out: about 25 seconds from the end, there's a truck driving along, and suddenly it explodes into two trucks, one facing the wrong way. What the heck happened there?? The truck was driving in the rightmost lane, so I don't see where the other truck could have come from.
It's pretty clear that the two trucks are a caravan, with the first one hidden from view initially, but skidding out in front of the rear one, which plows into it.
But by the time you see the first truck, it's already facing the wrong way. I don't see how it could have turned around without being seen (at the end, when it's laying on its side perpendicular to the road, its back end is off the road and its front is in the middle of the second lane), so that suggests that it must have skidded out before entering the frame. If that were the case, though, it seems like the second truck would have noticed, ha ha, but he doesn't appear to be braking.
(I like the driver who turns on his blinker to change lanes around the mess while one truck is still sliding down the road on its side.)
