giant machine

Weighing in at 1,900 tons, measuring 230 meters in length and with a diameter of up to 9.03 meters, this tunnel boring machine is a testament to the ' might' of China's

If you wander into buildings, you may be overwhelmed by towering cranes or huge material trucks, but they're not the biggest machines.

The surf lake in Yeppoon, Australia, uses a giant machine that can create five types of waves with different difficulty levels.