Tens of thousands of Palestinians have been pouring into Egypt from Gaza, after parts of the border wall near the Rafah crossing were destroyed.
They are rushing to buy food, fuel and other supplies that are hard to get hold of since Israel closed its border with Gaza last week.
A group called Hamas, who run the Gaza Strip, had been urging Egypt to open its border.
But now explosions overnight are thought to have wrecked up to two-thirds of the border wall.
So far, Egyptian border guards haven't tried to stop people crossing into their country.
Lots of Palestinians have taken the opportunity to stock up food, fuel and other essential supplies while they can.