In Bielefeld, on March 08, 2024, ten trees had to be felled that had grown together with 500 old tires for decades. The tires were once probably used to secure the ground around a playground, but were forgotten and overgrown by vegetation. The discovery only came about when the Greens drew attention to it.
Source: https://www.nw.de/lokal/bielefeld/mitte/23798094_Zehn-Baeume-verwachsen-in-Bielefeld-ueber-Jahrzehnte-mit-500-Altreifen-und-muessen-gefaellt-werden.html
https://www.nw.de
https://www.lz.de/owl/23802102_Bagger-holt-500-Altreifen-aus-der-Bielefelder-Natur-Zehn-grosse-Baeume-geopfert.html
https://www.lz.de