Stonehenge
internal ditch. As often happens in archaeological terminology,
this is a holdover from antiquarian usage, and Stonehenge is not
truly a henge site as its bank is inside its ditch. Despite being
contemporary with true Neolithic henges and stone circles,
Stonehenge is in many ways atypical. For example, its extant
trilithons make it unique. Stonehenge is only distantly related to
the other stone circles in the British Isles, such as the Ring of
Brodgar.[citation needed]
History
Stonehenge itself evolved in several construction phases
spanning at least some 1500 years. However there is evidence of
large scale construction both before and afterwards on and
around the monument that perhaps extends the landscape's time
frame to 6500 years.
Dating and understanding the various phases of activity at
Stonehenge is not a simple task; it is complicated by poorly kept
early excavation records, surprisingly few accurate scientific
annaabi.ee 
