The Mojave held lands along the river that stretched from Black Canyon, where the tall pillars of First House of Mutavilya loomed above the river, past Avi kwame or Spirit Mountain, the center of spiritual things, to the Quechan Valley, where the lands of other tribes began. As related to contemporary landmarks, their lands began in the north at Hoover Dam and ended about one hundred miles below Parker Dam on the Colorado River, or aha kwahwat in Mojave.