From artdaily.org:

Andy Holden's 'Pyramid Piece' ... It's a Giant Knitted Rock!

“From January to April 2010, artist Andy Holden will be displaying a giant knitted rock as part of Tate Britain’s Art Now programme of contemporary displays. Never before shown in the UK, Pyramid Piece 2009 is a vastly enlarged replica of a small Egyptian stone fragment, created from knitted yarn and foam over a steel support. It will be on display alongside a companion film work, Return of the Pyramid Piece 2008, and a collection of tourist souvenirs, In Place of an Ending (Pyramid Souvenirs, Second Visit) 2008.”

http://www.artdaily.org/index.asp?int_sec=2&int_new=35593