The Plain of Jars is a collection of large stone jars interspersed throughout the Xieng Khouang plain in the Lao Highlands. The stone structures are mostly made of sedimentary rock and, ranging from 3 to 10 feet in height (1 to 3 meters), each can weigh up to 14 tons.
There are approximately 3000 of these vessels, dated from 500BC to 500AD. Limestone and sandstone are the predominant stone used, some with their lids but most without. There are three different sites that I visited on this trip and each one gave a unique view and feel for these unusual structures.