The Plain of Jars (Lao: ທົ່ງໄຫຫິນ [tʰōŋ hǎj hǐn]) is a megalithic archaeological landscape in Laos. Scattered in the landscape of the Xieng Khouang plateau, Xieng Khouang, Lao PDR, are thousands of megalithic jars. These stone jars appear in clusters, ranging from a single or a few to several hundred jars at lower foothills surrounding the central plain and upland valleys