Westwater Canyon, Arch Tower, Dry Heaves. In June Bill Duncan and John Burnham made the first ascent of Arch Tower, naming their route Dry Heaves (400', 6 pitches, III 5.10 A1). To reach this remote spire, float the Colorado River from Loma to Mee Canyon. Hike three miles up canyon and the tower will be obvious. Another wilderness experience!