to know the process by which and the environment in which the monument was built. By the time Stonehenge was built, the landscape around the area on Salisbury Plain was rather open with more farmland and grazing land, and less forest. Underneath the first few feet of soil on Salisbury Plain there was a substantial layer of hard chalk, which made building rudimentary structures somewhat easier for the people of the era.
             The first phase in building Stonehenge was that of the earth monument, which consisted of a circular bank of dirt (originally about 6 feet tall, now barely 2 feet tall) with a ditch running along the outside of the bank. There are two breaks in the ditch and bank, forming two entrances, and in addition there are 56 Aubrey Holes, named for John Aubre
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