4 ms·

The bombs don't dig a hole, removing all matter for the next bomb to dig its way deeper...

• jandrewrogers 1y ago
  The point is not to dig a hole. Penetration depth is a function of compression strength of the medium. Every bomb leaves a path of debris in its wake with negligible compression strength that subsequent bombs can pass through before expending their energy.
  • missedthecue 1y ago
    But they compact the material beneath the explosion.
    • jandrewrogers 1y ago
      That does not materially add to compression strength.