International audience; During a six week field season in May and June of 2011, the Karnak Hypostyle Hall Project began to record inscriptions on the columns and abacus blocks of the building. This consisted of detailed collation of earlier records of the abacus blocks made by Ricardo Caminos in the 1950s and systematic photography of all the abaci facets in situ and of those now lying in the block yards. Many of the abaci have palimpsest inscriptions of erased Sety I or early Ramesses II inscriptions replaced by later Ramesses II reliefs. Orthogonal images of a representative sample of abaci facets were made in the block yards and from our scaffolding. Theodolite measurements of abaci facets and wall reliefs were also taken and a successful experiment was made to make a conventional photograph into an orthogonal one using the software program Redresseur. Collation of early sketches of the column scenes by Harold Nelson yielded a wealth of new epigraphic data, including palimpsest inscriptions on some of the columns. Study of the abaci and column scenes also gave us new insights into the orientation of decoration, chronology of the relief decoration and post-pharaonic iconoclasm. Work also continued to produce “unrolled” and orthogonal images of the columns based on photogrammetric data obtained in 2007 and 2008. We also continued our earlier work to record inscribed blocks that have fallen from the upper levels of the walls that now lie in the northern and southern block yards.