Mew’s current Twitter background is titled tinyfaraway.jpg and is taken straight from Stanley Donwood’s Blog.

it is a scaled down version of a recent print by Stanley titled ‘Far Away is Close at Hand in Images of Elsewhere’ and is one a set of three ‘Alchemical Terror prints’ from a art installation entitled ‘Mithras Tauroctonos Subterranea’ which was part of THE MINOTAUR.

(Source: theoutsiders.net)

The other two prints in the series are We who are still alive, are unreal in the eyes of the dead and There had been no quiet. There will be no peace which was later adapted to be packaging for The King of Limbs – From the Basement Bluray/DVD and similar to a tweet by Mews on April 1st 2011 (I am far from home. I am far from calm.)

(Source No News is Good News)
Stanley explains them as:

The posters (about 900 of them) represent the propaganda of three splinter factions of the same esoteric alchemical terrorist group, and utilise the angelic language vouchsafed to Dr John Dee and Edward Kelley in the sixteenth century.

The ‘angelic language’ on the poster is called Enochian.

The phrase “Far away is close at hand in images of elsewhere” was a piece of graffiti painted along the railway tracks to Paddington Station in the 1970s. There’s a nice blog post about it here

You can find out more by reading Stanley’s Stupid Blog (scroll down to November 2011), and Tablibro 28