Dry stone from the arable or cultural land. They serve both as cattle/sheep fences and the lot's borders. Sometimes also the dry stone terracing is apparent, often combined with parts of stone masonry (house foundations and shed walls) that are held together by a clay-cum-needles "composite" mortar. In Peru in the 15th century AD, the Inca made use of otherwise unusable slopes by building dry stone walls to create terraces. They also employed this mode of construction for freestanding walls. Their ashlar type construction in Machu Picchu uses the classic Inca architectural style of polished dry-stone walls of regular shape. The Incas
Ruins photography Ruins photography Ruins photography, sometimes called ruin porn, is a recent movement in photography that takes the decline of the built-environment (cities, buildings, infrastructure) as its subject. While "ruins" may be broadly defined as the remnants, or residue of human achievement from the temples of ancient Sumer to Machu Picchu, ruins photography refers specifically to the capture of urban decay and decline in the post-industrial zones of the world. Ruins photography aestheticizes the abandonment and decline of the city most of all, and has sparked conversations about the role of art in various revitalization and restoration projects from Detroit to