Enjoy and her staff visited the Exclusion Zone (CEZ) in 2014, equipping wolves with radio collars to trace their actions and monitor radiation exposure in authentic time. "The measurements on which the maps are based were gathered in 2021 within an unprecedented German–Ukrainian cooperation in the exclusion zone of Chernobyl", https://radiationzonefacts94825.wikissl.com/1424123/new_step_by_step_map_for_radiation_zone_7_days_to_die