The mysterious Plain of Jars is an undeveloped area near
Phonsavan in Xieng Khuang Province where huge jars of unknown
origin are scattered, the biggest weighing as much as six
tonnes ( 6.6 tons ) . The jars have been fashioned from
solid stone, which doesn't seem to have come from the area.
Many of the smaller jars have been taken away by collectors,
but there are still several hundred in the five major groups.
Thong Hai Hin, the biggest and most accessible site, has
two pavilions and restrooms built for the crown prince,
as well as the largest jar on the plain.