The object of the research is the data of folklore as well as of the language, particularly place names being linked with the subjects of archaeology and history, more precisely - the analysis of the word ragana (witch) and of the place names with the element ragan- in the folkloristic context, as well as the origin of the witch as the mythic personage. Also, the etymology of the place name Spigino ragas (the Spiginąs horn) (nearby lake Biržulis, where burial ground of the Neolithic is present). The question of the sunk Raigardas has been investigated with reference to the way of burying the dead in the water (in a bog). The aim is to encourage interdisciplinary research on linguistics, folklore and archaeology by presenting for the discussion some new hypotheses. Concludingly Raganinės (the witch places) are most probably the ones that got their names because of būriai rites. The Spigino ragas may be related to the name of the Latvian spigana (a witch). The element of burying the dead being reconstructed: the survivals of the pilė used to be harrowed up. By this fact the explanation could be made why in some cultures of the Eastern Balts burial-grounds or bones in the cremated graves can not be found. Supposedly, the tradition of burying the dead in the bog of the Raigardas Valley ought to have existed
