Odessa has some awesome catacombs and networks of tunnels, that were used by the resistance to the Nazis in WWII - very extensive, and some quite old.
Sounds too good to be true...
“Russian occupiers unable to repair crucial Antonivskyi bridge destroyed by precise Ukrainian HIMARS strikes
Occupiers try to find repair specialists in Crimea as no locals available. 🇷🇺 now can’t transfer ammo & equipment to Kherson - OblHead aide Khlan”