Landslide buried a stretch of Washington SR-504 Spirit Lake Highway, blocked access to Johnston Ridge Observatory in @MtStHelensNVM Mt St Helens National Volcanic Monument. Spring thaw loosened eruption debris from 1980. Article from @KOINNews Portland: https://www.koin.com/news/washington/landslide-closes-both-directions-of-sr-504-near-coldwater-lake/ #geology
