The movie was filmed in Gaeta and in the island of Ponza during the summer of 1970.
Ornella Muti, who was 15 during filming, has good memories about this movie. "Giorgio Stegani, a friend, offered me a part in a small film shot in the Pontine islands. Alessio Orano and I, whom I later married, were two Robinsons adrift between Ponza and Palmarola. Giorgio enjoyed making us act and we felt protected. Nothing better to overcome the initial shock of the debut with Damiani. It was little more than a game and I took it lightly. But no one forced me to," she said in a 2014 interview.
At the time of filming, Ornella Muti and Alessio Orano were real life lovers and they were married in 1975.
Both Ornella Muti and Stella Carnacina presented themselves at the audition for the lead role: the first was chosen because she had blue eyes, as was foreseen in the script for the character of Lisa, but the director insisted on giving an important role to the second as well.
Italian censorship visa # 57889 delivered on 16-3-1971.