Blue Waterfall, more commonly known as Matayangu Waterfall, is located in the National Park Manupeu, in central west Sumba. two thatch-roofed houses, literally in the middle of nowhere, are the deserted area which marks the start of the trail. The walk through the rainforest takes an hour and is a straightforward ramble interrupted by the occasional ravenous leech. Eventually you will hear the roar of the water and emerge from the canopy to see a powerful torrent that empties into a large teal pool. Again, there isn’t a soul in sight. “Only about 100 people come here a year”.