What's the difference between the upper and lower canyon/which is better?
We only went through the Upper Canyon. Both are supposedly very good. The lower has more up and down walking. The upper is magnificent.
The shape of the canyons is different. Upper is A-shaped, lower is V-shaped which lets more light inside. Both canyons are nice, but the upper is more crowded and only worth visiting around noon (11-15) since the light beams are only visible at that time. If you can not get a tour at that time go lower.
Get an answer from Upper Antelope Canyon Ticket staff and past guests.