Check out Paola Piviโs surreal image of zebras on a snow-covered mountaintop on High Line Billboard at West 18th Street as part of the artist series, on view until January 2, 2013. One of Italyโs most eccentric artists, Paola Pivi has built her artistic practice on absurd projects and apparently impossible ventures carried out with the serious devotion of a scientist and the creative freedom of an unstoppable explorer.