https://www.cabinetmagazine.org/issues/30/foer_siffre.php
CABINET / Caveman: An Interview with Michel Siffre
michel siffrecabinetcaveman
https://www.newscientist.com/article/mg23931900-400-this-man-spent-months-alone-underground-and-it-warped-his-mind/
Michel Siffre: This man spent months alone underground – and it warped his mind | New Scientist
Michel Siffre’s extraordinary self-experiments in a cave with no light would never be allowed now – but revealed strange truths about how we perceive time
michel siffrespent monthsman
https://www.iflscience.com/in-1962-a-geologist-went-into-a-cave-2-months-later-hed-accidentally-invented-a-new-field-of-biology-82082
Michel Siffre: The Man Who Spent 2 Months Living In A Cave And Accidentally Invented An Entirely...
michel siffremanspentmonths