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Weeds on the outer surface of trajanic gallery 20b

in evidenza

The archaeological sounding carried out on the outer surface of Trajanic galleries 20A and 20B entailed, as a preliminary phase, the removal of all the weeds that had taken root in the layer of earth above the screed connecting and covering the vaults.

The types of plants which presented the greatest problems for the wall structure and that were most difficult to remove and eradicate were an Ailanthus altissima (ailanthus or tree of heaven) and a large Laurus nobilis (laurel) bush.

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