
Israel Defense Forces took CNN correspondent Oren Liebermann into an elaborate Palestinian tunnel.

Such tunnels play a key role in ongoing tensions. Israel says Hamas militants use them to launch attacks.

The tunnel is wide enough to ride a motorcycle through it, and the IDF says troops found hidden weapons along its route.

Israel is testing a new tunnel detection system but is tight-lipped on how it works.

Israel is keeping its tunnel-detecting technology under wraps to avoid giving hints on how to counter it.

For Israel, the tunnel detector could become as vital as its air missile defense system.

Despite the new technology, Israeli officials say they think Hamas and other groups will continue building tunnels. And Israel will keep trying to find them.


