Arthur's Seat is the main peak of the group of hills which form most of Holyrood Park, a remarkably wild piece of highland landscape in the centre of the city of Edinburgh, about a mile to the east of Edinburgh Castle. The hill rises above the city to a height of 251 m (823 feet), provides excellent panoramic views of the city, is quite easy to climb, and is a popular walk. Though it can be climbed from almost any direction, the easiest and simplest ascent is from the East, where a grassy slope rises above Dunsapie Loch.

Many claim that its name is a derivation of a myriad of legends pertaining to King Arthur, such as the reference in Y Gododdin. However it has also been claimed that the name is a corruption of the phrase "Archer's Seat" on the supposition that the rock was a significant point of city defence in the Middle Ages. http://en.wikipedia.org/wiki/Arthur%27s_Seat,_Edinburgh