Landscape designer Bruce Zaretsky has a passion for stone walls, especially those of the dry-stacked variety made without the aid of mortar. Observation of the handiwork of others and his own experience have shown him that there's a fine line with these walls between those that are beautiful and enduring and those that are little more than expensive heaps of rock. Here, he shares a number of practical tips aimed at results of the beautiful, enduring kind.
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