Why aren’t tunnels dug during sieges to move supplies and food into cities under siege?

Question

Why aren’t tunnels dug during sieges to move supplies and food into cities under siege?

In: 0

Answer 1

they are kind of. they will use sewers and shelters to stage food/med delivery in active combat zones but tunneling any distance is very difficult and expensive(big heavy complex equipment and lots of planning(earth isn’t nearly as uniform as you might think))

also tunnels are death traps when discovered or bombed.