The 2020 Gjerdrum landslide was a quick clay landslide that occurred in the early hours of 30 December 2020 at Ask village, the administrative centre of Gjerdrum, Norway. It spanned a flow off area of 300 by 700 metres (980 by 2,300 ft) and additionally affected 9 hectares (22 acres) by debris flow. Several buildings were destroyed, most of them houses and apartment buildings.
As of 22 March 2021, ten people had been confirmed killed by the landslide.
In 2022, the police charged Gjerdrum Municipality. The causes of the landslide [... had by 2022 been] investigated by police; another investigation, tasked with finding – prior to August 2021 – the causes of the landslide, will be performed by a group of experts.
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