Sappers back in fashion - 6 km tunnel

[Kirkhill]

Ukraine buils 6-kilometer tunnel under Russia's drone kill zone - Euromaidan Press

Ukraine’s Air Assault Forces say engineers built a nearly six-kilometer tunnel in Donetsk to move troops, supplies, and the wounded.

euromaidanpress.com

30 km death zone
6 km supply tunnel

 

[Colin Parkinson]

6km tunnel that can move supplies is a lot of dirt that needs to be moved and disposed of. You can bet the Russians are looking for that dirt pile.