ततः संधिच्छेदखातसुरुङ्गाभिरपगच्छेत् ॥ कZ_०७.१७.४८ ॥
tataḥ saṃdhiccheda-khāta-suruṅgābhir apagacchet
ततः संधिच्छेदखातसुरुङ्गाभिः अपगच्छेत्।
They represent layered escape infrastructure: improvised exits (breach), terrain masking (ditch), and preplanned covert corridors (tunnel).
States should anticipate and control subterranean/structural escape vectors around sensitive sites (forts, residences, prisons).