There is a hazard from falling rock in the Betatakin alcove. The alcove is in sandstone, and rock sometimes falls from the ceiling and walls. We cannot predict if, when, or where a rock may fall.
The National Park Service cannot guarantee your safety. This is a natural area. Sandstone will flake off, which is how the alcove is created. This geologic process is still occurring on an occasional and unpredictable basis.
The Betatakin/Talastima tour will enter the alcove unless there is an obvious safety problem. You may enter the alcove on the tour, but it will be at your own risk. If you are uncomfortable with the risk of entering the alcove, you may take the tour just to the opening of the alcove. This is still a good tour and view, but you will not get next to the structures within the alcove.