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The excerpt represents the core issue or deciding factor on which you must meditate, and is drawn from Madam How and Lady Why by Charles Kingsley: boulder-stones which the ice brought down from the glaciers behind
us.
But how does he know that it was once joined to the cliff?
Because that cliff, and the down behind it, where the cows are
fed, is made up, like the island, of nothing but loose earth and
stones; and that is why it is bright and green beside the gray
rocks and brown heather of the moors at its foot. He knows that
it must be an old glacier moraine; and he has reason to think that
moraine once stretched right across the bay to the low island, and
perhaps on to the other shore, and was eaten out by the sea as the
land sank down.
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