Monaciello knew every twist and turn in these underground passages and could use the wells to secretly enter the piazzas and homes of Naples.
After a long day, if he found himself in someone's apartment, he expected the residents to share their wine and food as a thank you for his important work.
People also believed that offering food to Monaciello might turn into good fortune, but were careful not to boast about it lest the treasures disappear as quickly as they came.
The habits of Monaciello resemble those of the water carriers of ancient Naples who worked in the numerous tunnels connecting the city's underground wells.
The water carriers had to be short to pass through the tunnels, which gave them access to most houses, villas and Palazzos — wearing overalls that happen to resemble a monk's garments.