Centralia

Centralia was an ordinary Pennsylvania coal-mining borough until May 1962, when a fire — by the most widely accepted account, started during a routine landfill trash-burning operation — spread into an exposed coal seam beneath the town and ignited it. Underground coal seam fires are notoriously difficult to extinguish once established: buried deep with limited oxygen access, they can smoulder for decades or longer, largely impervious to surface-level firefighting techniques, and Centralia's fire had access to a coal deposit large enough that geologists have estimated it could theoretically continue burning for up to 250 years if left entirely unaddressed.

The fire remained a mostly abstract, underground problem for nearly two decades until 1981, when a twelve-year-old resident named Todd Domboski fell into a sudden sinkhole that opened beneath his feet in his grandmother's backyard, saved from likely death only by grabbing an exposed tree root as steam and carbon monoxide billowed from the opening below him. The incident forced national attention and a serious federal reassessment of the danger — elevated carbon monoxide levels and unstable, fire-weakened ground were confirmed across significant portions of the town.

Congress allocated more than $42 million in 1984 to relocate Centralia's residents; most accepted buyouts and left over the following years. In 1992, Pennsylvania invoked eminent domain over the remaining properties, and in 2002 the US Postal Service revoked the town's ZIP code entirely — a symbolic and practical erasure most American towns never experience. A small number of residents fought the buyout and, in a legal settlement reached in 2013, were permitted to remain in their homes for the rest of their lives, with the properties reverting to the state upon their deaths. As of recent counts, fewer than ten residents remain in what was, at its mid-20th-century peak, a community of over 1,400 people.

Centralia today is largely a grid of empty streets and building foundations reclaimed by grass, with visible steam still occasionally rising from cracked ground in certain areas — an accessible, sobering illustration of a purely geological and industrial phenomenon (an underground fire, mundane engineering failure, standard eminent domain law) producing an outcome that looks, to any visitor walking its abandoned streets, considerably stranger than its actual documented cause.