Dan Sai is a district in Loei Province, located in northeastern Thailand. It is known for its rich cultural heritage and beautiful natural scenery, including mountains and rivers. The area is famous for its annual Phi Ta Khon festival, which features colorful masks and traditional dances, attracting many visitors. The economy of Dan Sai is primarily based on agriculture, with rice, fruits, and vegetables being the main crops. The district also promotes eco-tourism, offering opportunities for hiking and exploring local wildlife. Its unique blend of culture and nature makes Dan Sai a notable destination in Thailand.