Description: Diverse pillars presumably providing protection to Portus Julius. Between the pillars, which are richly colonised and have abundant flora and fauna, there are numerous active fumaroles which attest the volcanic origin of this area. The fumaroles are columns of gaseous bubbles which escape from the sea bed depositing sulphur which covers the surrounding sea floor.
Location: Archaeological Park of Baiae “Zone C”.
Depth: Maximum -16m; average -12m.
Price: € 35 including admission fee to the park.
Service: Tank, weight, boat transfer and guide.