burp

Mountains could be what happens when Father Earth eats something that doesn__ agree with him. When he burps, mountains pop up.""That__ absurd," Keselo said, trying not to laugh."If you__e got a better theory, I__ be happy to hear it," Red-Beard said mildly. "Anyway, a burp isn__ anything but air that boils up out of a man__ stomach, so Father Earth__ mountains have chunks of empty air in the middle of them__urps that didn__ quite manage to make it to the surface, you understand.