This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Channel Tunnel idea from Gamond a. Thom de Gamond's plan for Channel tunnel with harbour midChannel on the Varne sandbank scan of an old drawing from Thomas Whiteside The Tunnel under the Channel page ish Aim Thom de Gamond PD PDold Thom de Gamond
Page 2023 Free-images.com. All images are Public Domain