[left that other site]

That was very cool.

I think it could be a prototype for a new kind of shielding around stationary objects.

Kind of like a moat encased in rubber? Just thinking out loud.

[Boogieman]

Yeah that could work, but dirt stops bullets too, and it will stay where you pile it up and doesn’t evaporate. If you want to penetrate a defended earth-berm structure, you may need explosives.

[PGR88]

I think it could be a prototype for a new kind of shielding around stationary objects.

I agree. It would be cheap and made of one of the most widely available commodities on earth.