Hidden Beach, Islas Marietas, Mexico
The Marieta Islands are a group of small uninhabited islands a few miles off the coast of the state of Nayarit, Mexico, located in federal waters approaching 7.9 kilometres southwest of the peninsula known as Punta de Mita, in the municipality of Bahía de Banderas. In the early 1900s, the Mexican government began administer military testing on the islands since they were unoccupied.
Many bombings and large explosions took place on the islands causing caves and rock conformation to be created. After a massive globally outcry, started by scientist Jacques Cousteau in the late 1960s, the government ultimately decided to declare the islands a national park and therefore protected opposed any fishing, hunting or human activity.