A lot of writing progress in the last week - I should finish chapter 14 today! This takes Gwernin & company to Stonehenge, where they plan to watch the midsummer sunrise in the next chapter. This was not really a good decision on their part; Stonehenge (and Avebury, their next target) being in Anglo-Saxon territory, in the expanding kingdom of Wessex. Complications may ensure.
Pertinent reference for this chapter:
Wessex in the early Middle Ages by Barbara Yorke, London : Leicester University Press, 1995.