Core on deck! The angle of this photograph emphasizes the length of the inner core barrel, roughly 9.5 m long. It houses the core liner, which cases and contains the core material, whether it is sediment or hard rock. A full recovery can be claimed when the amount of the formation recovered equals that of the advancement of the inner core barrel and its liner. (Credit: Bill Crawford, IODP/TAMU) [Photo ID: exp351_083] Back to expedition photos.