A landslide is the movement of a mass of rock, debris or earth down a slope. Landslides are life threatening and also cause damage to property and these are associated with high remediation costs. In South Africa a recent example of landslide socio-economic impact was the damage to the Kaaimans Pass road in 2006. Slope failure resulted in the complete closure of the N2 highway and it impacted on traffic and local businesses.
It is important to create regional landslide susceptibility maps to assist in decision-making. The maps provide an indication of areas where landslides are likely to form due to slope instability. The report by Singh et al., 2011 describes landslides, their mechanisms of formation, triggering mechanisms as well as cost implications. Additionally, regional landslide susceptibility maps are provided.
Singh, R.G., Forbes, C., Chiliza, G., Diop, S., Musekiwa, C., & Claassen D. Landslide geohazards in South Africa: Landslide susceptibility mapping, socio-economic impacts, mitigation and remediation measures. Council for Geoscience Report Number: 2011-0016.