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Close-up of yorkstone cascades, the trick is to avoid a waterfall 'staircase', by splitting the watercourse and adding multiple cascades pointing in different directions. This takes many years of practice. - Landscaping and Water Features - Creative Cascades Close-up of yorkstone cascades, the trick is to avoid a waterfall 'staircase', by splitting the watercourse and adding multiple cascades pointing in different directions. This takes many years of practice.