Kalong Island

Kalong Island isn’t a place where you’ll be stepping ashore for a hike or a swim. In fact, the island is essentially a dense, tangled forest of mangroves rising out of the water. We usually arrive here about thirty minutes before sunset, drop anchor, and just wait for the show to begin. It’s one of those rare moments in travel where everyone on the boat collectively goes quiet, sensing that something extraordinary is about to happen.

The island is home to thousands of fruit bats, also known as flying foxes. As the sun dips below the horizon and the sky turns those deep shades of violet and burnt orange, the mangroves seem to vibrate. First, a few scouts take flight, but within minutes, thousands of them are soaring into the air. They form a massive, dark river across the twilight sky, heading toward the mainland of Flores to forage for the night.

There’s something incredibly primal about it. There’s no engine noise, no music—just the rhythmic flapping of thousands of wings overhead. It feels like you’ve been dropped straight into a scene from a nature documentary. It’s the perfect way to wrap up a day in the archipelago: no effort required, just a cold drink in your hand and one of the most mesmerizing wildlife displays you’ll ever see.