Kiltullagh Church (Irish: Cill Tulach):Church of the Hills is a former Christian Church and burial site located in County Roscommon, Ireland. Several archeological digs have taken place on the site that have revealed evidence of Christian activity on the site early as the fifth century. Evidence of earlier pagan worship and burials have also been found. The current state of the site is in ruin, as a result of the mid 17th century Cromwellian forces most likely headed by Henry Ireton. More recently evidence of an earlier wooden structure has been found near to the site of the ruined stone church.