"It’s really warm!" said one.
For 40 days and 40 nights, the group lived in and explored the cave without a sense of time. There were no clocks and no sunlight inside, where the temperature was 10 degrees Celsius (50 F) and the relative humidity stood at 100%. The cave dwellers had no contact with the outside world, no updates on the pandemic or any communication with friends and family above ground.
Scientists at the Human Adaption Institute leading the 1.2 million-euro $1.5 million) "Deep Time" project say the experiment will help them better understand how people adapt to drastic changes in living conditions and environments, something much of the world can relate to because of coronavirus pandemic.