Due to the writings dealing with travel "Journey to East" during Edo period by Nankei TACHIBANA, on July 13 every year in Mt. Sakka Ryusenji-temle in Nakaniigawa-gun in Ecchu Province (currently Toyama Prefecture), both from the top of Mt. Ryusen and from the sea, each one of ryuto is said to fly to put a fire on the treetops, which is called santoryuto.
橘南谿による江戸時代の紀行文『東遊記』によれば、越中国（現・富山県）では中新川郡の眼目山立山寺という寺で毎年7月13日、立山の頂上と海中から1つずつ龍燈が飛来して梢に火を灯すといい、これを山灯竜灯と称するという。