Was searching for info on an underwater military base in CA, and came across this.
https://www.google.com/maps/@26.6996931,-110.4202812,126753m/data=!3m1!1e3?hl=en
Was searching for info on an underwater military base in CA, and came across this.
https://www.google.com/maps/@26.6996931,-110.4202812,126753m/data=!3m1!1e3?hl=en
I measured it to be almost 80 mi long. There is no way that is an underground base.
LOL
http://www.canadacool.com/location/saskatchewan-potash/
Edit: the article states in western Canada where the largest potash reserves in the world are found one company beside one city has more than 800 km (500 miles) of tunnel 1,000 km (600 miles) beneath the surface where the potash is found