Playa del Amor, Marieta Islands, Mexico: Hidden 'lovers' beach' inside a cave

When packing for a caving expedition, flashlights and hard hats are high on the list. Travellers can usually prepare themselves for muddy conditions and very tight spaces. But if claustrophobia and dirt doesn't sound like you, but you still want some adventure with your significant other, then check out this Mexican beach hidden inside a cave.

Situated on the Islas Marietas, off the coast of Puerto Vallarta, is one of Mexico's most remarkable wonders. Playa del Amor (Beach of Love), or more commonly known as the Hidden Beach, is engulfed by a cave with a large open roof that lets the sunlight in. While this adventure doesn't require abseiling or water-tight shoes, gaining access isn't an easy feat.

Travellers must first embark on a 60-minute boat ride and then kayak or swim through a long water tunnel that links the Pacific Ocean to the beach.

After absorbing the surroundings and a couple of pinches to make sure this is real life, there's an abundance of beachside activities to enjoy. The flora and fauna make it the perfect spot for nature enthusiasts and there are coral reefs for picturesque snorkelling. There's also a sandbank for sunbathing and plenty of shade for the hotter days.

Caving expeditions often warrant an explanation of their history and natural formation. This hidden love beach is no different. Unfortunately for the dreamers out there, this cave has a more sinister past.

Many believe the sunroof that formed this attraction was the result of bombing practice by the Mexican government during World War 1. As the Marieta Islands were (and still are) completely unoccupied, they were seen as the perfect spot for military testing in the early 1900s.

In 2005, the hidden beach was named a national park (Parque Nacional Islas Marietas​) after numerous campaigns to stop harmful human interference. Now swimming, kayaking and falling in love are the only forms of recreation allowed on the island.