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Photograph of the volcano formation in Witches II Cave

Gouffre Jean-Bernard Deep Zoom Plan Survey

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This survey is reproduced by courtesy of the Groupe Spéléologique Vulcain of Lyon. It is reproduced from a PDF version published in 2023 which is available from their website on a CC BY-NC-SA licence basis. The Deep Zoom facility has been implemented using ZoomHub technology.

The cross-section survey of the system may be found here.