Why sinkholes swallow roads and cities

Business Insider Video
177,700 次觀看・2 年前
They can happen in an instant and quickly swallow up roads, cars, and even houses. While fairly rare, sinkholes are still a danger to people all over the world. They can vary from a few feet to hundreds of acres wide and from less than 1 to more than 100 feet deep. We explore the causes of sinkholes and ways to predict them.