As Israel readies to extend its ground mission into Gaza, the Israeli Defense Forces has released a video and images detailing how the terror group Hamas has constucted an extensive underground complex of tunnels and rooms directly under a large hospital that serves civilians.

ISRAELI ARMY SAYS GROUND FORCES WILL EXPAND THEIR ACTIVITY IN GAZA FRIDAY EVENING
JERUSALEM — The Israeli military on Friday said its ground forces were “expanding their activity” in the Gaza Strip, as the army moved closer to a full-on ground invasion of the besieged territory.
Rear Adm. Daniel Hagari, the army’s spokesman, said aerial attacks had been targeting Hamas tunnels and other targets.
“In addition to the attacks that we carried out in recent days, ground forces are expanding their activity this evening,” he said. “The IDF is acting with great force ... to achieve the objectives of the war.”
Israel has amassed hundreds of thousands of troops along the border with Gaza ahead of an expected ground offensive against the Hamas militant group.
Israel has been pounding Gaza with airstrikes since Hamas militants carried out a deadly cross-border incursion on Oct. 7.