Cocceius Auctus
Lucius Cocceius Auctus ( 1st century BC and 1st century AD ) was a Roman architect employed by Octavian's strategist ( and intended successor ) Agrippa to excavate the subterranean passageways known as the "crypta neapolitana" connecting modern-day Naples and Pozzuoli and the Grotta di Cocceio , connecting Lake Avernus and Cumae . 
<triplet> Cocceius Auctus <subj> Roman <obj> time period <triplet> Naples <subj> Pozzuoli <obj> shares border with <triplet> Pozzuoli <subj> Naples <obj> shares border with