The discovery of the nearly milelong tunnel was made in the winter during Operation Northern Shield, which aimed to expose and neutralize cross-border attack tunnels, but was announced Wednesday.
The tunnel is 22 stories deep, or 260 feet, and stretches more than 250 feet into Israel, the Israel Defense Forces said, calling it Hezbollah’s “flagship” tunnel. Inside was infrastructure for lights, a public address system and stairs made of concrete.
The IDF said the tunnel took years to build and would be destroyed in the coming days.
The Israeli army has found and destroyed six Hezbollah cross-border tunnels.