Middle Iron Age hillforts In the period 400-300 BC a widespread change can be detected in Wessex: a number of the early hillforts were abandoned while those that remained in use were refortiﬁed, frequently on a massive scale: these we refer to as developed hillforts. Danebury provides a good example of what this entailed. Here the early rampart was greatly increased in volume with material largely derived from a wide quarry trench dug just behind the rampart tail. The ditch was also recut as a deep V, the inner side of which was continuous with the front slope of the rampart. One of the entrances was now blocked, while the remaining one underwent a series of changes culminating in a long corridor type protected by a complex of outworks.