The pulsing of pavement may be an echo of Mexico City’s distant past, as groundwater from a now-drained lake causes soil to flow.
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In addition to lost lives and destroyed buildings, Mexico City’s recent deadly earthquake caused a peculiar phenomenon. As a small crowd watched, a section of street buckled up and down repeatedly, creating a rhythm like that of a breathing animal. Resident Rigoberto Lechuga Silva recorded the seismic pulsing on his cell phone. An expert who viewed the footage on social media believes it may be an effect of liquefaction, a process in which groundwater causes soil to flow like liquid.
Watch a Road ‘Breathing’ in Mexico After an Earthquake | National Geographic