According to Malalasekara, in the entry 'Kamboja' in "Dictionary of Pali Proper Names": 'The country was evidently on one of the great caravan routes, and there was a road direct from Dvāraka to Kamboja (Pv.p. 23).' The Pali work called Petavatthu that Malalasekera refers to (as Pv.p. 23) says that caravan wagons loaded with goods went from Dvāraka to Kamboja. The introductory story as given in the Petavatthu Commentary says that the thousand caravan carts that went from Dvāravatī to Kamboja passed through an arid desert where they got lost.