_Llandudno, on the Great Orme's Head_ (Vol. v., pp. 175. 235.).--MR. WM.
DURRANT COOPER, in "N. & Q.," has quite mistaken the subject of my
inquiry. I am well aware of the cavern, or old copper mine, supposed to
have been worked by the Romans; but the place I inquire about is of a
different description, in every respect, and is only six feet across,
and eight or ten feet high, and fitted up as a place of worship, with a
font, altar, seats, &c. I hope some one who has seen it will be able yet
to throw some light on the subject.