www.submarinecablemap.com

If you ever find one of those for cables buried in North America, please be sure to share it.

http://personal.garrettfuller.org/blog/2018/01/19/att-long-lines-a-forgotten-system/#:~:text=The%20Long%20Lines%20network%20was,of%20teleprocessing%20systems%20and%20modems.

Wow your site is awesome buddy!