t is an ancient past .The Sandagiri Stupa in Tissamaharama which dates back to 200 BCE witnesses the beginning of our stupa.
For the first time in our history, the Department of Archeology has confirmed that the history of two Buddhist monks belonging to a period of time.
The excavation of the Sandagiri Seya in Tissamaharama commenced in 2000. In 1986, when the former President Ranasinghe Perari Madasa began working on the Kataragama village, the Sandagiri Seya was damaged.

This is why the focus of a proper inspection and excavation prior to the preservation of the Dagoba was taken into consideration.

Large-scale Buddhist stupas have several phases of reform. The stupa which was originally built by a majestic king is then used by the kings of the ages to perform various renovations. Before a stupa is preserved, a systematic investigation of the period during which the stupa was last restored is confirmed. Identifying the design of the original stupa and identifying phases of regeneration are important before conservation work.

In 2000, he served as the Director General of Archeology. Under the supervision of Mr. Wijepala, Dr. Nimal Perera, as the Chief Supervisory Officer, contributed to this formal inspection.

A number of phases of the dagoba were discovered during that formal inspection.

Prior to the construction of the stupa it was revealed that there was a historical settlement in the area. Although it was only the first phase, there were not enough samples to investigate and determine the time period. So there was no chronology of that first stage.

This period was followed by signs of an Iron Age settlement. Samples were found at that stage, so a chronological age for the period was determined. It was established that dating back to the 900s. The settlement dating back to the pre-historic Iron Age has found evidence that reflects the historicity of the artefacts of the time period.

…. The Sandagiri Stupa, believed to be of 200, was built on a 47 stone quarry under the earth. The quarries are made of sturdy bricks.

The periodic test was conducted at the American Beta Analytica Lab. These chronologies have been confirmed by referring to the timely inspections of the coal found at the base at Deliwala, Kotawehera and Sandagiri Seya.

During the erection of the stupas the ancient kings of the day burned the excavation site to build the base. In archaeological excavations, those layers are found in charcoal. The relevant periodic inspections refer to the charcoal found during the excavation.

Excavations have also been carried out on the top of the sandagiri stupa and the brick has been used for the later phases of reconstruction since the 47 brick quarry.

Accordingly, this temple complex was a temple which existed before the time of Mahindagamuwa. This is because the remains are older than the fragments found.