Al-Jazeera Video: Traders rebuild their tunnels in Gaza - 22 Jan 09

"Tunnels between Egypt and Gaza, which Israel say are used for weapons smuggling, was one of the main targets for Israel's air strikes.

Al Jazeera's Todd Baer reports from Rafah in Egypt, where many of the destroyed tunnels are now being rebuilt.

The Palestinians say the underground trading network is a necessary lifeline to get food, gas and medicine into the Strip since the border crossings remain closed."