GISSIZ: GIS in Slope Instability Zonation Landslide hazard mapping in the Kakani area, Nepal 1 GISSIZ: Geographic Information Systems In Slope Instability Zonation. Case study of the Kakany area, Nepal C.J. van Westen and R. Soeters International Institute Geo-Information Science and Earth Observation (ITC), P.O. Box 6, 7500 AA Enschede, The Netherlands. Tel: +31 53 4874263, Fax: +31 53 4874336, e-mail: westen@itc.nl