Authorities on alert as elephants on 300-mile trek approach city in China

The herd of wild elephants (Hu Chao/Xinhua via AP)

Elephants in a wandering herd in China have walked down paved roads and poked their trunks through windows as they neared a city, as authorities rushed to protect both the animals and people.

It is not clear why the 15 elephants made their long trek from a nature reserve, which has been documented and monitored both on the ground and from the air by a dozen drones.