Tistilbekken

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.

Nystulia (1–147, 2–148) is a road built as a three-part road network in a residential area of the same name in the village of Ask in the municipality of Gjerdrum in Viken county. The road has access via three intersections from the road Fjellinna, where each branch of Nystulia does not meet in the residential area. The river Tistilbekken flows partly open and partly in pipes through Nystulia. The residential area was hit by the 2020 Gjerdrum landslide on the night of 30 December 2020, which is described as the most serious in Norway of this type in recent times.

Ask is the administrative centre of Gjerdrum municipality, Norway. It is around 20 km north-east of Oslo. Its population is 6,890 as of 2020.Ask contains a community centre, schools, kindergartens, a training centre, shops, a pub, restaurants and hotel, according to public information.

Bråtesletta is a village in Akershus, Norway.

Gjerdrum (Norwegian: [ˈjæ̀rdrʉm]) is a municipality in Akershus county, Norway. It is part of the traditional region of Romerike. Gjerdrum borders the municipalities of Nannestad, Nittedal, and Ullensaker, and Lillestrøm. The administrative centre of the municipality is the village of Ask.

Grønlundfjellet is a village in the municipality of Gjerdrum, Norway. Its population (2005) was 2,174.

Bekkeberga is a village in Viken, Norway, lying to the northwest of Ask.

Vardeåsen is a village in Lillestrøm, Akershus, Norway.

Skedsmokorset is a village in the municipality of Lillestrøm and in the county of Viken. Its population is approximately 15,000.

Sandum is a village in Rømskog municipality, Norway. Sandum is one of four districts (grunnkretser) in Rømskog, and had a population of 158 in 2001.