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After 40 days in a cave in the French Pyrenees, 15 volunteers returned to the light of day on Saturday.
The aim of the experiment by the Swiss researcher Christian Clot was to research the effects of the loss of a sense of time and space.
The participants and Clot lived without a watch, telephone and daylight at 10.5 degrees Celsius and a humidity of almost 100 percent in the cave of Lombrives.
They had to generate electricity with a kind of exercise bike and draw drinking water from a depth of 45 meters.
"The humidity is a big factor," said Clot.
The further the time progressed, the more hungry the participants developed.
The humidity at the top was 95 percent
Source: AP
Above all, the volunteers were amazed at the complete loss of track of time: “It was a real shock.
I thought there were five or six days left, ”said 29-year-old Emilie Kim-Foo.
Others reported shifting sleep-wake periods.
While some participants had just got up, others had gone to sleep.
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The next big task for everyone involved is to get back in sync with the outside world, said Clot. In addition, it is not easy to separate from the others after all the time spent together.