These are the lines that Google is installing for Google Fiber. These lines are easily reusable when even better and faster technology is available like the government's Hollow Core which moves data at the speed of light. The access points into this underground network allow lines to be pulled out and replaced easily without re-digging. The lines are pulled through the ground using a truck with a large spool of cable loaded onto it. The guys unroll the line feeding it into the ground through one hole while guys at the other end are ready to receive the line through the hole at the other end.
