Ratnapura in the context of Kalu Ganga

The Vedda (Sinhala: වැද්දා [ˈvædːaː]; Tamil: வேடர் (Vēḍar)), or Wanniyalaeto, are a minority indigenous group of people in Sri Lanka who, among other sub-communities such as Coast Veddas, Anuradhapura Veddas and Bintenne Veddas, are accorded indigenous status. The Vedda minority in Sri Lanka may become completely assimilated. Most speak Sinhala instead of their indigenous languages, which are nearing extinction. It has been hypothesized that the Vedda were probably the earliest inhabitants of Sri Lanka and have lived on the island since before the arrival of other groups from the Indian mainland.

The Ratnapura District, which is part of the Sabaragamuwa Province, is known to have been inhabited by the Veddas in the distant past. This has been shown by scholars like Nandadeva Wijesekera. The very name Sabaragamuwa is believed to have meant the village of the Sabaras or "forest barbarians". Place-names such as Vedda-gala (Vedda Rock), Vedda-ela (Vedda Canal) and Vedi-Kanda (Vedda Mountain) in the Ratnapura District also bear testimony to this. As Wijesekera observes, a strong Vedda element is discernible in the population of Vedda-gala and its environs.

The Kelani River (Sinhala: කැළණි ගඟ) is a 145-kilometre-long (90 mi) river in Sri Lanka. The fourth-longest river in the country, it stretches from the Sri Pada Mountain Range to Colombo. It flows through or borders the Sri Lankan districts of Nuwara Eliya, Ratnapura, Kegalle, Gampaha and Colombo. The Kelani River also flows through the capital of Sri Lanka, Colombo, and provides 80% of its drinking water.

Carnelian (also spelled cornelian) is a brownish-red mineral commonly used as a semiprecious stone. Similar to carnelian is sard, which is generally harder and darker; the difference is not rigidly defined, and the two names are often used interchangeably. Both carnelian and sard are varieties of the silica mineral chalcedony colored by impurities of iron oxide. The color can vary greatly, ranging from pale orange to an intense almost-black coloration. Significant localities include Yanacodo, Peru and Ratnapura, Sri Lanka. It has been found in Indonesia, Brazil, India, Iran, Russia (Siberia), and Germany.

The Sabaragamuwa Province (IPA: [səbəɾəɡəmuʋə], Sinhala: සබරගමුව පළාත, romanised: Sabaragamuwa Paḷāta, Tamil: சபரகமுவ மாகாணம், romanised: Sabaragamuva Mākāṇam) is one of the nine provinces of Sri Lanka. Ratnapura is the capital of the province.