A couple of minutes after they had entered it, the tunnel collapsed.

Everyone is fine, though you were knocked out when the tunnel collapsed.

The old tunnels collapsed, and more people died in the devastation.

When the tunnel collapsed, he didn't want it to make a sink across the lawn.

Without sensors there would be no warning if the tunnel collapsed about them.

When there was a fire or a tunnel collapsed, prisoners were abandoned inside and left to die.

The ancient tunnel could collapse and no one would ever know they were there.

During construction, the partially built tunnel collapsed on 30 June 2005.

A major break caused the water to begin to run out, after a tunnel collapsed on 20 June 2006.

With a roar the tunnel in front of him collapsed.