grotto grotta di nettuno, capo caccia, alghero, sardinia, italy - may 2 2024

alghero caccia capo cave di grotte grotto italy landscape mediterranean natural nature neptune nettuno outdoor rock sardinia stalactite stalagmite stone tourist travel view water europe old underground beautiful coast neptunes scenic sea blue cliff cliffs rocky seagal seascape cavern geology inside italia lake sardegna background beauty grotta editorial