ingiriya is from the coast and extends a further inland. it is mountainous, especially near the eastern border. the highest point is madakada giranchi mountain, high. eduragala mountain is also over high. the eastern part contains scattered mountains over high. there are some similarly high mountains in the western part. overall, 60% of the area is flat plains. the kalu river flows along the southern border of ingiriya and many streams flow into the kalu river. the largest, nambapana stream, is in the east. another river, the mawak oya, starts in the north and flows along the west side before connecting to the kalu river in the south.