It is situated 14 km from Suangpuilawn village in Aizawal district. It has an area of 2.5 hectares. Rungdil means lake of partridge. It acquired this name as at one time it was the habitat of a large number of partridges.
Rungdil Lake consists of two lakes, more or less similar, separated by a
narrow strip of land. It is said that if a pumpkin is cut into two halves and one is put in one lake, it will surface in the other lake. The two lakes are believed to have a subterranean connection. The lake is bounded by tropical evergreen deciduous forests. Its flora and fauna are of similar type as found in and around the other lakes in Mizoram.