The method of excavating the platform is ostensibly simple, but every stage must be completed to a consistently high standard, particularly the maintenance of records. The amount of data generated every season is vast. For every level the procedure is the same: the wood is exposed and the surrounding peat removed so that the individual pieces are as clearly defined as possibIe whilst still in situ. The cleaned level is photographed from fixed positions in the roof of the excavation shelter. A plan is drawn, partly using the vertical photographs, but it is finished in the excavation, and amended where necessary during the lifting process. The wood is then lifted using teams of two or three excavators, at least one of whom needs to be very experienced. The wood is either allocated a number as it is lifted, or is sampled by metre square and spot height (O.D.). Provenance data, including grid reference, height O.D., and provisional measurements and description are noted on the field sheets.