Smith's Bible Dictionary

Aceldama (the field of blood) (Akeldama in the Revised Version), the name given by the Jews of Jerusalem to a field near Jerusalem purchased by Judas with the money which he received for the betrayal of Christ, and so called from his violent death therein. (Acts 1:19) The "field of blood" is now shown on the steep southern face of the valley or ravine of Hinnom, "southwest of the supposed pool of Siloam."