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ENGLAND.
Chap. IV.
evident that these cists must at one time have been covered with earth. They are not dolmens, or anything that would do for selfstanding monuments.
If covered with earth, they would form a circular mound 45 feet in diameter internally, and 65 feet across
to the foot of the outer slope, and, as far as one example can go, would tend to prove that the circular vallum at Avebury and