Experts say the fires are mainly caused by human activity.

There is no more light at the end of this narco-tunnel.but a tunnel opening carved into the cement floor.

2022 between Mexicos Tijuana into the San Diego area.according to a federal criminal complaint filed in San Diego.officials began making traffic stops of vehicles that had been there or at a warehouse near the border.

are in San Diegos Otay Mesa industrial area.side of tunnels with concrete after they are discovered.

walls are no match for more sophisticated passages that run deeper underground.

crudely built tunnels called gopher holesIn response to Hamas’ actions.

a 25-mile-long strip of land along the Mediterranean with a population of more than two million people and the West Bank.the largest of its kind in the last 50 years.

Territory in the area has been fought over since the creation of the state of Israel in 1948.according to the Wall Street Journal — was labelled Operation Al-Aqsa Flood.