A phase of Early Medieval settlement activity was also identified at Craggan. The settlement activity from this period started in the middle of the site and through the 5th-6th century there was some small-scale settlement activity. The features from this period demonstrate food waste was being disposed of but there is limited evidence for the type of structures on site. Perhaps the structures were seasonal or temporary, or perhaps the materials they were built from have not survived to leave an archaeological trace.
From the 7th century AD the settlement activity moved back to the same location as the previous prehistoric settlement, on the higher gravelly ground. It comprised of at least one roundhouse structure with a stone-built hearth, fire pits, metal working features and another phase of grain processing. The structure was a relatively small post-defined structure, with a large hearth and other refuse pits nearby. Nearby some pits were found within a cluster, one of which was a possibly a rudimentary grain drying feature. Other evidence of grain processing included a pit with a quern or mill stone roughout and a pit next to it with evidence for grain processing waste being dumped. This demonstrated that they were continuing to process grain for the early medieval settlement, as well as manufacturing their own querns or millstones.