Beneath fields near Waxahachie, Texas, 22.5 kilometers of tunnel remain from an American particle accelerator that was never completed. The Texas accelerator was designed to send each proton beam around the ring with an energy of 20 TeV. Construction Began After Years of PlanningProposals for an American collider operating at tens of TeV developed during the late 1970s and early 1980s. Reagan’s science adviser encouraged the design team to be “bold and greedy,” according to Scientific American. Scientific American reported in 2013 that access shafts had been filled and surviving tunnel sections collected rainwater.