Trinchera Peak is a mountain in southern Colorado that spans Costilla and Huerfano counties in the Culebra Range, part of the long Sangre de Cristo mountain system along the state’s southern edge. Its importance lies in its place within the Culebra Range, a distinctive section of the Rockies known for rugged high summits and private landholdings. As one of the range’s notable mountains, Trinchera Peak helps define the dramatic skyline of this less-visited region of Colorado.