On the Poonagala Oya river off the Koslanda- Wellawaya road over a straight rock wall. lies this magnanimous water fall, 559 ft in height. Its distance from Wellawaya town is 13 kms, while that from Koslanda is 6kms. Diyaluma is seen as a soft veil hanging endlessly from the top of a mountain. It is visible from the Balangoda - Wellawaya highway too.