A number of Mass rocks and gardens were recorded in a survey carried out in 1957 in the Roman Catholic Diocese of Clogher in the Clontibret area of County Monaghan, Ireland.
[2] During the time of the Penal Laws, Catholic religious observances were suppressed, and these remote sites were used as secret places of worship.
[1][4] O'Gallachair's survey records Dunfelimy as being a Mass rock "on the site of old church of Annyalla".
In making this reference, O'Gallachair is picking up a point made over thirty years earlier by Fr James E McKenna in his Parishes of Clogher, Vol.
The opinion is that there may be a mix up between a Mass rock in Dunfelimy and perhaps a structure (usually a hut called a bothóg) which predated the old chapel at Annyalla and which was built in the late 1790s.