We reproduce below Peter Pearson’s description of the Druid’s Chair from his book ‘Between the Mountains and the Sea’ 1998 p.56
The Druid’s Chair, which, though it looks like a prehistoric burial mound is considered by some to be a fake, is probably the oldest monument in Killiney. It was opened up during the eighteenth century when three stone cists were found there, and, in the fashion of the time, a grove of oak trees was planted. It is thought that some of the excavated stones were re-arranged to form the so-called Druid’s Chair.
Charles Vallancey Pratt, a noted antiquarian, inspected the monument in the early nineteenth century and believed it to be genuine, and so it came to be marked on the early Ordnance Survey maps as a ‘Pagan Temple’. Later historians such as William F. Wakeman, the antiquarian, condemned it as a forgery, nonetheless many houses in the immediate vicinity were taken with its romantic antiquity and were given such names as Mount Druid, Druid Hill, or Temple Hill.