A 200m crescent of white tufa cliff, Chiaia di Luna, glowing above turquoise water, plus sea caves, natural pools at Piscine…A 200m crescent of white tufa cliff, Chiaia di Luna, glowing above turquoise water, plus sea caves, natural pools at Piscine Naturali, and a pastel fishing harbour that has somehow escaped international tourism entirely. Roman tunnels cut through the cliffs. A Roman exile island, Nero's mother Agrippina was banished here, and Roman fish farms, tunnels and a harbour mole are still in use. Ponza's tufa is so soft that whole houses are carved into it. Mussolini was imprisoned here in 1943. Anchorage: Several bays give shelter from most directions; the harbour is small and busy in August. Hazards: No site-specific hazards noted, brief normally. More