Literally, “basis of work” or “place of work.” The term is most often used specifically to identify the Thai Forest Tradition, that is, the forest tradition lineage founded by Phra Ajaans Mun and Sao. For an introduction to the history of the Kammatthana Tradition, see the essay “The Customs of the Noble Ones,” by Thanissaro Bhikkhu. PDF – https://www.dhammatalks.org/Archive/Writings/CrossIndexed/Uncollected/MiscEssays/The%20Customs%20of%20the%20Noble%20Ones.pdf