Deep beneath the surface of the earth lies a mysterious underground lake, home to precious mineral waters that humans have sought after. It turns out that the muddy sediments mingling with this subterranean water have remarkable benefits for the skin, promoting a radiant complexion and enhancing blood circulation. Who would have known that across the entire globe, there are only three such mud sources? One of these rare places is Phu Klon, a health mud source located in Thailand.