Very Large Hadron Collider
The Very Large Hadron Collider (VLHC) was a proposed future hadron collider planned to be located at Fermilab. The VLHC was planned to be located in a 233 kilometres (145 mi) ring, using the Tevatron as an injector.
Source: Wikipedia — Very Large Hadron Collider (CC BY-SA 4.0)