"That "hill" is moving toward the shore. Notice how it is closer to the white boat in the second picture. "
It just looks that way because the photographer is zooming in on the woman running out. It is just hills off to the right in the background.
You are wrong it are not a hill it is the tsunami approaching. If there were hills out there then they would have blocked the wave and the water would have been diverted.
You can also see in the pictures that the ocean has receded. Again, hills if that is what they are, would have blocked the ocean from receding.