Kaeng Khoi district

Kaeng Khoi (Thai: แก่งคอย, pronounced [kɛ̀ŋ kʰɔ̄ːj]) is a district (amphoe) of Saraburi province in central Thailand. Located on the bank of the Pa Sak River amid the surrounding hills of the Dong Phaya Yen Mountains, its main town of the same name developed throughout the 19th century, first as a trading post on the river and the passageway into the Northeast, then as a railway town when the Northeastern Railway was built through the town at the end of the century. Today, it has developed into a major industrial centre, especially of cement manufacturing.