Sin autem medii montes erunt inter moenia et caput fontis, sic erit faciendum, uti specus fodiantur sub terra librenturque ad fastigium, quod supra scriptum est.
If there are hills between the city and the fountain head, we must proceed as follows. Tunnels are to be dug underground and levelled to the fall already described.
final_alignments\Vitruvius_Architecture_Book_8.json