Benlettery, or Binn Leitrí, is a 557-metre mountain in Connemara, Galway, and the southernmost peak of the Twelve Bens. Though lower than many of the range’s main summits, it is especially notable for its end position and sharp pyramidal shape when viewed from the south. Its ridges link it to Bengower and Benglenisky, and with nearby peaks it helps form the Glencoaghan Horseshoe, one of Ireland’s best-known hill-walking circuits. An older name, Binn Dúghlais, was recorded in 1684 along with a legend of a summit pool said to turn hair white. Its accessibility and striking profile have made it a popular walking peak and a familiar local landmark.