When construction work began near Rossana in 2001, excavations carried out over the following year uncovered a cluster of features that pointed to prolonged, layered human activity on the same patch of ground, across very different periods and practices.

The excavations, conducted under licence in 2001 and 2002, revealed several distinct finds. A cremated pit burial, in which the burnt remains of a person were interred directly in a pit cut into the ground, was uncovered alongside an urn burial, where cremated remains had been placed in a ceramic vessel before being deposited. Both practices have deep prehistoric roots in Ireland, though their precise dating at Rossana is not recorded in what has been published. Alongside these burials, archaeologists found numerous hearths, suggesting that the site saw repeated use over time. Perhaps most intriguing is the enclosure, a defined and bounded area of land whose construction has been tentatively dated to the 12th or 13th century, placing it in the medieval period. An enclosure of this kind typically marks off a space for a specific purpose, whether agricultural, domestic, or ritual, though the relationship between it and the earlier burial features at Rossana is not clear from the available evidence. The findings were published by Kieran in 2004.