What sport is known as "fierljeppen" in the Netherlands?

The term fierljeppen means elegant jumping and basically is the art of using a pole vault to cross over large ditches and bogs. The one main difference from the athletic event of a pole vault where the winner vaults the highest, in fierljeppen the winner is who can vault the farthest. Currently, the world record is 22.21 metres (72 ft 10 in)!

A little trivia bit, this type of pole vaulting is featured prominently in Brandon Sanderson's The Stormelight Archive series where it is used as a travel technique across tabletop islands surrounded by gorges.

https://en.wikipedia.org/wiki/Fierljeppen

Here is how it works:

https://www.youtube.com/watch?v=YP32iWoqjnQ