Complex sentence: The complete perimeter extends to a length of 14 km, most of which consists of ramparts between 3-5m in height, enforced by circular structures constructed in rubble and brick masonry laid in lime mortar, which are plastered in some parts.
Split into simpler sentences: The complete perimeter extends to a length of 14 km, most of which consists of ramparts between 3-5m in height. These ramparts are enforced by circular structures constructed in rubble and brick masonry laid in lime mortar, which are plastered in some parts.