or its components. The adoption of this material coincided with other changes in some past societies, often including differing agricultural practices, religious beliefs and artistic styles, although this was not always the case. Archaeological sites in Thailand, such as None Nok Tha, Lopburi Artillery centre, Ong Ba Cave and Ban Don Ta Phet show iron implements in the period between 3,400-1,700 years ago The Iron Age settlements in Thailand Non Nok Tha Non Nok Tha () is an archaeological site in Phu Wiang District, Khon Kaen Province, northeastern Thailand, dating from 1420 to 50 BCE. Lopburi Artillery centre Lopburi Artillery centre () is an archaeological site in Mueang District, Lopburi Province, northeastern Thailand, dating from 1225 to 700 BCE. Ong Ba Cave Ong Ba Cave () is an archaeological site in Sri Sawat District, Kanchanaburi Province, western Thailand, dating from 310 to 150 BCE. Ban Don Ta Phet Ban Don Ta Phet () is an archaeological site in Phanom Thuan District, Kanchanaburi Province, western Thailand, dating from 24 BCE to 276 CE. Many artefacts found in a 4th-century cemetery provide evidence of trade relations with India, Vietnam, and the Philippines. Such artefacts include flat hexagonal shaped carnelians, small stone figurines of lions and tigers, and various metallic vessels. See also Early history of Cambodia Initial states of Thailand Migration period of ancient Burma Peopling of Thailand Prehistoric Asia References 9. Halcrow, S., Tayles, N., Inglis, R., Higham, C., Carver, M. (2012). Newborn twins from prehistoric mainland Southeast Asia: birth, death and personhood. Antiquity, 86 (333). External links This Ancient Land of Dinosaurs, Siamoid, Siamese, and Thais; English and Thai Thailand Archaeology of Thailand Thailand