Echoes from the Borderlands: Study One “begins” at 8am, off the coast of the Pacific Ocean, where “the wall inserts itself in / the water like a sentence that / bends down, / bleeds down, into the margin /of a page.”There, when a sound wave encounters the wall, it does not disappear. It bounces back toward its source in an echo. The sound work by Valeria Luiselli, Ricardo Giraldo, and Leo Heiblum stems from the premise that every piece of documentation is the reverberation of an event.