Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Stonehenge, Avebury and Associated Sites' has mentioned 'Circa' in the following places:
Occurrence Sentence Text Source
Together with inter-related monuments, and their associated landscapes, they demonstrate Neolithic and Bronze Age ceremonial and mortuary practices resulting from around 2000 years of continuous use and monument building between circa 3700 and 1600 BC.
The megalithic and earthen monuments of the World Heritage property demonstrate the shaping of the landscape through monument building for around 2000 years from circa 3700 BC, reflecting the importance and wide influence of both areas.