The upper canyon is wider at the bottom with a narrow opening at the top, which produces beautiful light beams inside the canyon. Lower Canyon is much smaller on the canyon floor with a wider opening at the top.
Upper Antelope Canyon is easier to navigate and more touristy. Upper Antelope Canyon is easier to walk through due to its wider bottom but it will be darker than Lower Antelope Canyon.
Lower Antelope Canyon has narrower walls and a few staircases. Our kids found a few of the tight squeezes a lot of fun and enhanced the adventure of the experience of them.