This reminds me of Fantastic Mr. Fox.

Seems the image can be interpreted as that if mountains are destroyed, so will mountain echoes.

If the Yamabiko are the echoes, destroying mountains will also remove them.

I am the Yamabiko. I speak for the mountains. I speak for the mountains for the mountains have no tongues. And I'm echoing you, sir, at the top of my lungs.

Usually the girls Inari draws in these pics are pretty creepy looking, but this Kyouko is adorable.