Cave Experiment Explores How Humans Adapt in Extreme Confinement Published April 29th, 2021 - 02:06 GMT Explorer-Researcher (Twitter) Highlights With no way to reference time inside a cave, organising tasks together had been a particular challenge, Clot told AP. As the world experiences forced isolation due to the pandemic, a cave experiment explores how humans adapt in extreme confinement. Also Read Fifteen French volunteers have spent 40 days in a cave with no sunlight or any connection to the outside world in an experiment that sought to better understand our perception of time, and how people adapt to drastic changes in living conditions.