America cancelled the world's most powerful particle collider, leaving a 22.5-km tunnel hidden beneath Texas for more than 30 years

A vast underground tunnel system stretching 22.5 kilometres still lies hidden beneath the fields of Texas, marking the unfinished remains of the Superconducting Super Collider (SSC), one of the most ambitious science projects ever attempted in the United States. Designed to become the world's most powerful particle accelerator, the collider was expected to transform the study of fundamental physics by smashing protons together at unprecedented energies. The project was first proposed in 1983, and construction broke ground in 1991, according to accounts of the SSC's history referenced by the Texas General Land Office and other sources. By the time Congress cancelled it in 1993, roughly $2 billion had already been spent, though the accelerator never operated.More than three decades later, the abandoned tunnels remain underground, serving as a reminder of a landmark scientific project that ended before producing a single experiment.The 1993 Superconducting Super Collider's giant underground design As reported by EBSCO, the Superconducting Super Collider (SSC) was conceived as an enormous circular accelerator extending for roughly 87 kilometres beneath Ellis County, south of Dallas. En...