This story was originally published by High Country News and is reproduced here as part of the Climate Desk collaboration. The North Cascades elk herd is a cluster of some 1,600 animals whose domain, like so many habitats, is riven by a highway. From 2012 to 2019, Washington state records show, at least 229 elk were killed by cars along a stretch of State Route 20 in the Skagit Valley.