fen fire

noun

noun

will o' the wisp

Also we were above the level of the marsh mist, which lay stretched beneath us like the dim smoke-pall over a city, lit up here and there by the wandering globes of fen fire.1886 October – 1887 January, H[enry] Rider Haggard, She: A History of Adventure, London: Longmans, Green, and Co., published 1887, →OCLC:

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