Learning the ropes: why Germany is building risk into its playgrounds (2021)
These things are ubiquitous in Berlin: https://stage.berliner-seilfabrik.com/wp-content/uploads/201...They're not actually that high to an adult, but I have childhood memories of these seeming somewhat tall and scary. On an average one, a young child can fall 4-6 times their own height (but not straight, you'll get buffered by the structure as you go down).