Which phase saw rearrangement of the bluestones ?
The analysis showed that Atkinson 's phasing of the monument no longer held , and a new scheme was set out : Phase 1 , c.2950-2900 BC * Construction of ditch , inner bank , outer counterscarp bank * Construction of Aubrey Holes ( interpreted as a ring of posts ) * Primary fill accumulated in the ditch , and an organic layer over it Phase 2 , c.2900-2400 BC * Secondary ditch fill accumulated , including some deliberate backfill * Post settings within the earthwork from the centre towards the southern entrance ; also in the northeast entrance * Towards the end of the phase , cremations put in the partially filled Aubrey Holes and the upper ditch , and on and just inside the inner bank Phase 3 , c.2550-1600 BC * 3i : Bluestones set up in the Q and R Holes and then dismantled * 3ii : Construction of the sarsen circle and the trilithons .