This particular photo is taken at the hill called Seefin on the Sheep’s Head peninsula (Seefin being a particularly bad anglicization of Suí Finn or Suidhe Finn – Fionn’s Seat). There are several Fenian placenames scattered around Ireland (one being another ‘Seefin’ – a summit in the Ballyhoura mountains in Limerick) but also through Scotland where the Fenian Cycle tales were also very widespread. Sometimes, in Scotland, the name Fingal is used instead of ‘Finn’ or ‘Fionn’, such as Suidh Fhinn (or Fingal’s Seat as it’s called in English) in the Isle of Skye, Fingal’s Pinnacles (also in Skye), Fingal’s Cauldron Seat on the Isle of Arran etc. etc.
The fact that these characters were situated up on such huge heights helped to support claims from some of the later mythological tales that Fionn and the Fianna were actually a bunch of giants. As a result, additional tales were often added on at these areas (or earlier creation tales were adapted to add the Fenian hero) to ‘explain’ how these ‘giants’ carried out some amazing feat to create a topographical feature nearby.
On the Sheep’s Head peninsula, the local legend is that Fionn fell asleep on the hill. He must have been having a particularly bad nightmare for, according to the story, his right foot slipped and dug out a piece of land to form the lake at the bottom of the hill. Gouging a portion out of the landscape clearly annoyed the ‘giant’ big time (apologies for the pun) for he then went on to lob the removed ‘sod’ offshore to Dunmanus Bay and created Carbery Island.
Hence, the expression ‘Let sleeping giants lie!’