TIL the British had a secret WW2 plan called Operation Tracer to leave behind an observation post if the Germans captured Gibraltar. Six men were to be sealed inside a hidden chamber to observer the harbor and Strait of Gibraltar. They would have had 7 years of supplies and bicycle-powered radios.

Submitted by Bandit_the_Kitty t3_y25jre on October 12, 2022 at 2:33 PM in todayilearned