19

Stonehenge is perhaps the world's most famous prehistoric monument. It ………………… in several stages.

ERECT

20

The ………………… monument was an early henge monument, built about 5,000 years ago.

ONE

21

…………………, in the Neolithic period about 2500 BC, there appeared the unique stone circle. Today, together with Avebury, Stonehenge forms the heart of a World Heritage Site, with a unique concentration of prehistoric monuments.

LATE

22

The ………………… structures known in the immediate area are four or five pits, three of wich appear to have held large pine 'totem-pole like' posts erected in the Mesolithic period.

EARLY

23

It ………………… how these posts relate to the monument of Stonehenge. At this time, when much of the rest of southern England was largely covered by woodland, the chalk downland in the area of Stonehenge may have been an unusually open landscape.

NOT KNOW

24

It is possible that this is why it became the site of an early Neolithic monument complex ………………… back to the period between 8500 and 7000 BC.

DATE