Fifteen volunteers have emerged from a cave in the southwest of France after spending 40 days without clocks, phones, or sunlight for a human isolation experiment.
The group of eight men and seven women lived in the Lombrives cave as part of a $1.4 million project called Deep Time, which set out to explore the limits of human adaptability to isolation. The 40-day project, led by the Human Adaption Institute, ended on April 24, 2021.