Might be able to adjust the detonation altitude to 'tune' the concussion to the expected structural integrity/depth of the existing tunnel complex.
I'd assume bare rock excavation, there not being much in the way locally of trees for lumber shoring, or concrete/rebar for even sturdier reinforcement.
Also note, even if a tunnel does not collapse, spalling from the rock surface in a confined space can be an entirely unpleasant weapon effect too . . .
I'd assume bare rock excavation, there not being much in the way locally of trees for lumber shoring, or concrete/rebar for even sturdier reinforcement.
Also note, even if a tunnel does not collapse, spalling from the rock surface in a confined space can be an entirely unpleasant weapon effect too . . .
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