25th April marks the first anniversary of the Gorkha earthquake in Nepal<\/a>, undoubtedly the most important landslide-generating event of 2015.\u00a0 According to ICIMOD<\/a>, the earthquake triggered 5,159 significant landslides in 14 districts.\u00a0 Of these, 464 landslides directly impacted physical infrastructure.\u00a0 The earthquake killed over 9000 people, with 255 still missing<\/a>.\u00a0 Many of this latter group are likely to have been killed by landslides.<\/p>\n The most dramatic and significant landslide was the Langtang rock and ice avalanche, which was probably the earthquake triggered event that killed the most individuals.\u00a0 I featured a very preliminary analysis of this event back in May<\/a> based on the initial satellite imagery that was available at the time.\u00a0 Since then the USGS have published an exceptionally useful review of the types and\u00a0 impacts of landslides in the Gorkha earthquake (Collins and Jibson 2015<\/a>), which includes a description and analysis of the Langtang rock and ice avalanche.\u00a0 The report can be downloaded from here, and there is a set of accompanying (and very useful) videos on youtube<\/a> as well.<\/p>\n This analysis provides detailed insight into the mechanisms and processes of the Langtang rock and ice avalanche.\u00a0 Included, and in the public domain, is a youtube video of a helicopter overflight of the site<\/a>:<\/p>\n