A landslide created a perilously wide gap in the forest canopy on China’s Hainan Island, so researchers made rope bridges to help the endangered Hainan gibbons get across
Source:
https://www.newscientist.com/article/2257483-artificial-rope-bridges-help-stop-rare-primates-jumping-to-extinction/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home