Has always been used as for example here ... ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-yaBs8oIhEIo.html&start_radio=1 Originally kelotuli or jätkänkynttilä from Finland, where forest workers burned a dry patch of cloth while heating and cooking in a forest workplace.The Hakkapelites (Finns) spread the knowledge to others during the Thirty Years' War. Kelotuli or Jätkänkynttilä yes -"swedish log fire" no sauna yes - "bastu" no sauvakävely yes - " scandinavian walking " or " nordic walking" no
