There are those in the mountains that have been doing this since the first humans were here.
They control time.
Apparently they disappear whenever someone gets close enough to them or they turn around and then there are inanimate objects around but no living people.
“Now and again, it is necessary to seclude yourself among deep mountains and hidden valleys to restore your link to the source of life. Breathe in and let yourself soar to the ends of the universe; breathe out and bring the cosmos back inside. Next, breathe up all fecundity and vibrancy of the earth. Finally, blend the breath of heaven and the breath of earth with your own, becoming the Breath of Life itself.”
– Morihei Ueshiba