Another unique feature of Sri Lankan architecture is the creation called Sandakada pahana which is also known as Moon-stone. The name of it is based on the shape and the design. It is a semi- circular stone slab which is elaborately carved. However, square shaped and rectangular shaped moonstones were also found among ruins. The moonstones were created during the latter stage of the ancient Anuradhapura kingdom and during that period they were only placed at entrances to temples. It is believed among Buddhist that Sandakada Pahana symbolizes the circle of Samsara.
In the center of the Sandakadapahana, a half lotus is carved. The inner half circle is enclosed by several concentric bands. The first band from the half lotus is decorated with a procession of swans. It is followed by the next band which is designed with a design called Liyavel ( creeper). In the third band the carvings of four animals; elephants, lions, horses and bulls following each other in a procession can be seen. The outermost band contains a carving of flames.
It is said that the symbol represents teachings of Buddhism; the never ending cycle of life and the pains of passion that the ordinary people experiencing throughout in the circle of samsara.