Best described as arduous, the navigation to Espiritu Santo’s Millennium Cave isn’t for the faint-hearted. However, armed with a sense of adventure, a pair of reef shoes and a can do attitude, this excursion proves a memorable experience. Float along the river in parts, past many a cascade including the impressive ‘Hidden World Waterfall’ churning up the dark water. Millennium Cave itself is one of Vanuatu’s most spectacular natural wonders, an enormous dark dome replete with flying bats. A porthole punctures the rock’s ceiling, letting in a shaft of filtered light which illuminates the way. This is a journey to dine out on!