As a side note, it is so interesting that, like skunks, the heads of badgers have this black/white "warning coloration."
It is the dachshund's responsibility to investigate a den, determine whether a badger is home, pursue the animal to a stopping point, oppose it hard enough to keep it in one location, and announce its positive findings and whereabouts by barking.
It is the job of the hunters to dig to the dog and badger, after which they quickly call the dog out and shoot the badger. An obedient dog is a must in this situation. Contrary to common (mis)conception, dachshunds must cooperate with hunters in their work. It cannot be any other way.
You can see that Riesa is wearing a locator collar. The collar has a radio-frequency device that sends signals to a small hand-held box used by the hunters to help determine just where the dog is and how deep. They obviously want to pinpoint location as much as possible before they begin to dig!
You can imagine the amount of effort required here. Also effort by the dog who - think of this - is more than 11 feet underground in a tight place, facing and holding the badger all this time. Sometimes for hours.
Or, I should say, that in all the digging through frozen earth, tree roots, and rock ledges, expectations are high that the badger IS staying in the same location. But sometimes it does manage to move until the dog can get it cornered again elsewhere at which time digging begins again.
"Extreme hunting" may not be too lofty a term for what badger hunters and badger dogs do on a regular basis.