Tuoni in the Kalevala

The fullest surviving episode involving Tuoni is Vainamoinen's journey to Tuonela in search of three words he needs to finish an unfinished boat, words that can only be had from the realm of the dead. Tuoni's household questions and delays him, and when he tries to cross back Tuoni's daughter sets a net of iron across the river to catch him; Vainamoinen escapes only by transforming himself, in some sung versions into a snake, and slipping through.

The material survives because Elias Lonnrot, compiling the Kalevala in the first half of the nineteenth century, collected variant sung episodes like this one from rune singers across Karelia and stitched them into a continuous narrative, a process that gave the poem its literary shape while drawing on genuinely old oral material whose individual pieces had circulated separately for generations before being fixed on paper. The three words Vainamoinen seeks are never specified in the text itself, which some readers have taken as evidence that the episode is really about the danger and difficulty of the search rather than about any specific piece of practical knowledge the boat building required. Vainamoinen ultimately fails to obtain the words from Tuoni's realm at all and has to seek them elsewhere, from the dead giant Antero Vipunen in a separate episode, which places the Tuonela visit within a larger pattern in the Kalevala of quests that must be attempted, survive and yet still fall short before a final source of the needed knowledge is found.