Ключевые слова: 16th century watchtower, area of transitions ecotone border ecological ecosystems, cliff, cliff coastal cliff, coast, coastal erosion, coastal proximity, coastal surveillance, coastal surveillance system, coastal warning, coastline, compounds by rocks resistant to erosion, defense, emits light beams, escarpment, for navigation, fortification, geographic, global defense, guide, history majorca, in use until the nineteenth century, joan binimelis, light signage, lighthouse, maritime signals, navigation systems, pirate raid, protection, reference, sedimentary rocks, signal tower, slope, steep slope, strategic locations coast stretch of coastline, the mediterranean sea, tower system watchtowers, types of coast mediterranean coast, vertical, watchtowers,