Early one morning, during a holiday at Salt Rock on the Kwazulu coast in South Africa in 2013, I took this series of photographs of the holiday houses along a stretch of beach, looking inland and out to sea from the same position. Rotated and facing one another, they reveal the way that, at the coast, earth systems and infrastructural elements come into parallel alignment. Where else do land and sea, clouds, waves, foam, rocks, sand, vegetation, retaining walls, burglar alarms, fences, gates, stairways, chairs, walls, windows, balconies, balustrades, chimneys, rooflines, as well as the less physical, though no less material infrastructure of real estate value and view, all line up? Perhaps this is what is meant by a coastline? Not a line as such, but a liminal zone where infrastructural and earth systems a-lign.