Pala-U is the longest waterfall in the country that is comprised of a major 16 tiers. The hike is perfect for those who want a thrilling experience. The three levels, in the beginning, will be easily accessible through rocky paths. But after this starts the real challenge and should only be attempted by experienced hikers and those with the physical ability to endure the rugged path. Once you reach the third tier, you'll be tempted to rush into the natural pools to cool off, but if you decide otherwise, you can always reach the top for the ultimate reward of a grand view of Myanmar and Thailand.