Gantry crane

A gantry crane is like a giant metal caterpillar that moves back and forth on long legs. It has two arms that stick out like the antenna on a bug. These arms can move up and down and side to side to pick up really big and heavy things like shipping containers or machines. The gantry crane is often used in places like ports or factories where there are lots of big things that need to be moved around. Think of it like a big robot that helps make work easier and faster for people.