caves of zinzulusa, near castro on the salento peninsula in puglia, italy. person in silhouette stands on the gang plank

adriatic apuglia apulia background blue boot castro cave caves coast entrance europe formation gang grotta grotto heel heritage historical history holiday italian italy landscape limestone nature near ocean otranto peninsula person plank puglia rock salento scenery scenic sea silhouette sky south southern stands tourism tourist travel vacation view water zinzulusa