300 miles of Hamas subterranean terror tunnels the next big challenge for IDF: 'Gaza metro'

Hamas is said to have built an approximately 300-mile subterranean system of tunnels that snakes beneath civilian homes, schools and hospitals in urban areas of the Gaza Strip.

And for the past three weeks – since its forces carried out a massive and brutal terrorist attack inside Israel on Oct. 7 – Hamas’ leadership, both political and military, has been safely holed up down there as Israeli fighter jets pound the territory from above. Ruth Marks Eglash is a veteran journalist based in Jerusalem, Israel. She reports and covers the Middle East and Europe. Originally from the U.K, she has also freelanced for numerous news outlets. Ruth can be followed on Twitter @reglash

On Wednesday during a briefing with the foreign press, Hagari said the massive damage in the Jabalia refugee camp after an Israeli airstrike on Tuesday was worsened by the fact that there were tunnels underneath the densely packed urban area. Locals reported seeing sinkholes opening up under the bombed-out buildings.

As Israeli ground forces expand further inside Gaza, the IDF will be forced to turn its attention to this underground battlefield, which is a challenge faced in other recent conflicts, particularly in the Middle East, but never on this scale, experts told Fox News Digital this week.