"The Arc of Oblivion" explores a quirk of humankind: in a universe that erases its tracks, we humans are hellbent on leaving a trace. Set against the backdrop of the filmmaker's quixotic quest to build an ark in a field in Maine, the film heads far afield - to salt mines in the Alps, fjords in the Arctic, and ancient libraries in the Sahara - to illuminate the strange world of archives, record-keeping, and memory.

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