sinkholes aren't 100 miles deep and a football field wide.
people who live in florida know all about these sinkholes, they undermine building foundations all the time.
when the ground falls out from under a building, if that building drops just an inch... it's real hard to stop that much mass from moving. you can stop a baseball, but you aren't going to catch an anvil... let alone tens of thousands of them.
thats ridiculous.
sinkholes aren't 100 miles deep and a football field wide.
people who live in florida know all about these sinkholes, they undermine building foundations all the time.
when the ground falls out from under a building, if that building drops just an inch... it's real hard to stop that much mass from moving. you can stop a baseball, but you aren't going to catch an anvil... let alone tens of thousands of them.