A Mass rock was a rock used as an altar by the Catholic Church in Ireland, during the 17th and 18th centuries, as a location for secret and illegal gatherings of faithful attending the Mass offered by
Sandhill Mass Rock site near Dunfanaghy, County Donegal
The entrance to Cathedral Cave upon the isle of Eigg, with An Sgùrr in the background
St. Ninian's Church was built in 1755 as a strictly illegal "Mass house" at Enzie, Moray.
Marian grotto and Christian pilgrimage shrine dedicated to Our Lady of the Highlands on the grounds of Immaculate Conception Church at Stratherrick, near Whitebridge, Inverness-shire
Immaculate Conception Church, Stratherrick is in the Dalcrag area of Whitebridge, Inverness-shire, in the Highlands of Scotland and is a served by the Roman Catholic Diocese of Aberdeen. It is an acti