Achi (Achí in Spanish) is a Mayan language very closely related to K'iche' (Quiché in the older orthography). It is spoken by the Achi people, primarily in the department of Baja Verapaz in Guatemala.There are two Achi dialects. Rabinal Achi is spoken in the Rabinal area, and Cubulco Achi is spoken in the Cubulco area west of Rabinal.One of the masterpieces of precolumbian literature is the Rabinal Achí, a theatrical play written in the Achi language.