<Tr> <Th> Region </Th> <Td> Laos </Td> </Tr> <Tr> <Th> Coordinates </Th> <Td> 19 ° 25 ′ 48" N 103 ° 09 ′ 11" E ﻿ / ﻿ 19.43 ° N 103.153 ° E ﻿ / 19.43; 103.153 Coordinates: 19 ° 25 ′ 48" N 103 ° 09 ′ 11" E ﻿ / ﻿ 19.43 ° N 103.153 ° E ﻿ / 19.43; 103.153 </Td> </Tr> <P> The Plain of Jars (Lao: ທົ່ງໄຫຫິນ (thōŋ hǎj hǐn)) is a megalithic archaeological landscape in Laos . It consists of thousands of stone jars scattered around the upland valleys and the lower foothills of the central plain of the Xiangkhoang Plateau . The jars are mostly arranged in clusters ranging in number from one to several hundred . </P> <P> The Xieng Khouang Plateau is located at the northern end of the Annamese Cordillera, the principal mountain range of Indochina . French researcher Madeleine Colani concluded in 1930 that the jars were associated with prehistoric burial practices . Excavation by Lao and Japanese archaeologists in the intervening years has supported this interpretation with the discovery of human remains, burial goods and ceramics around the jars . The Plain of Jars is dated to the Iron Age (500 BC to AD 500) and is one of the most important prehistoric sites in Southeast Asia . </P>

What is the plain of jars in laos