Haven’t travelled through it myself, but many people have. https://www.brusselstimes.com/1027469/eurotunnel-celebrates-its-30th-anniversary-with-big-plans-for-next-decade
Question: What is considered to be the world’s oldest recorded personal name? Answer: The Sumerian name, Kushim, the name of an accountant or administrator who lived in the Mesopotamian city of Uruk five thousand or so years ago. https://www.guinnessworldrecords.com/world-records/first-surviving-personal-name
Not the safest one to traverse at the moment. Or during some other points in history. https://kids.britannica.com/kids/article/Suez-Canal/353819 https://kids.britannica.com/students/article/Suez-Canal/277946