It is a site of historical and archaeological significance that is dominated by a massive column of granite approximately m ft high. He built his palace on top of this rock and decorated its sides with colourful frescoes.
On a small plateau about halfway up the side of this rock he built a gateway in the form of an enormous lion. The capital and the royal palace were abandoned after the king's death. It was used as a Buddhist monastery until the 14th century. It is one of the best preserved examples of ancient urban planning. It is likely that the area around Sigiriya was inhabited since prehistoric times. There is clear evidence that the many rock shelters and caves in the vicinity were occupied by Buddhist monks and ascetics from as early as the 3rd century BC.
The earliest evidence of human habitation at Sigiriya is the Aligala rock shelter to the east of Sigiriya rock, indicating that the area was occupied circa BC during the Mesolithic Period. Buddhist monastic settlements were established during the 3rd century BC in the western and northern slopes of the boulder-strewn hills surrounding the Sigiriya rock. Several rock shelters or caves were created during this period. These shelters were made under large boulders, with carved drip ledges around the cave mouths.
Rock inscriptions are carved near the drip ledges on many of the shelters, recording the donation of the shelters to the Buddhist monastic order as residences. These were made in the period between the 3rd century BC and the 1st century AD. The rightful heir, Moggallana , fearing for his life, fled to South India. Afraid of an attack by Moggallana, Kashyapa moved the capital and his residence from the traditional capital of Anuradhapura to the more secure Sigiriya.
Kashyapa murdered his father by walling him up alive and then usurping the throne which rightfully belonged to his half-brother Moggallana, Dhatusena's son by the true queen. Moggallana fled to India to escape being assassinated by Kashyapa, but vowed revenge. In India he raised an army with the intention of returning and retaking the throne of Sri Lanka, which he considered to be rightfully his.
