Though nothing is visible at ground level today, this site once housed a bustling community protected by banks and ditches, part of a larger deserted medieval settlement complex. Between 1997 and 1999, archaeologists uncovered a sophisticated two-phase enclosure system before the area was impacted by road construction works.

The main enclosure measured roughly 85 metres north to south and 50 metres east to west, surrounded by a substantial ditch cut through limestone bedrock. A causewayed entrance on the western side, marked by pairs of postholes, led into an interior space that was subdivided by wooden fencing. The northern half of the enclosure revealed intensive activity, with large quarry pits where clay was extracted for building materials, alongside rubbish pits containing organic waste. Interestingly, the excavators found no clear evidence of buildings or hearths within the enclosure itself, though considerable amounts of ash had been dumped into the northern ditch.

The artefacts recovered paint a picture of medieval daily life at Attyflin. Pottery sherds included both locally-made Adare ware and imported Saintonge green-glazed ceramics from France, indicating trade connections. Personal items such as iron knives (one still retaining part of its wooden handle), a small slash hook, a decorated copper-alloy stick pin, a ring brooch, and a single-edged composite bone comb were discovered in various pits. About 40 metres north of the main enclosure, archaeologists uncovered additional ditched enclosures with more quarry and rubbish pits, including one containing over 100 oyster shells; evidence of the medieval diet and perhaps a taste for luxury foods in this rural Limerick settlement.