Nongkhnum Island is the biggest river island in Meghalaya and the second biggest river island in Asia, after Majuli Island in Assam. Located about 14 Kms from Nongstoin, the district hqs. of West Khasi Hills, it is 20 to 25 sq. kms in area. Travelling on foot from Nongstoin through the villages of Lawse, Mawduh and Mawthar, it takes about two and a half-hours to reach the Island.