What are 2 reasons the Native Americans would build their homes in cliffs?

I did some research and this is what I found;

These shallow caves in the recessed cliffs served as natural shelters from the wind and rain; in addition, caves facing east or south were warmed by the morning sun and cooled in the evening. Many were situated near a spring, above a river valley with arable land. Most were inaccessible from above and had to be entered by either removable ladders or by hand and foot holds cut into the cliff faces.

I hope this is helpful and have a great day! (Also brainliest would be appreciated but you don’t have to:) )