This pint-sized island lies tantalisingly close to the lough's southeastern shore, but alas, can't be accessed. Still, it's visible from the shore. Its air of tranquillity so moved Yeats that he famously wrote The Lake Isle of Innisfree:
I will arise and go now, and go to
Innisfree,
And a small cabin build there, of clay and wattles made;
Nine bean rows will I have there, a hive for the honey bee,
And live alone in the bee-loud glade.
Continue east from Dooney Rock and turn left at the crossroads. After 3km turn left again for another 3km. A small road leads down to the lake.