ABSTRACT Indonesia is a country with the fourth largest peatland in the world..Bengkalis Regency is the second-largest regency in terms of peatland area after Indragiri Hilir Regency with an area of 856 thousand ha or 21.2% of the total peatland in Riau Province, Sumatra Island. Peat has very high water content but become brittle as it dries. This causes the peat slopes to be prone to landslid…