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Hanna and Heather Craig, twin sisters aged seventeen from Alaska, have invented a new winter rescue device: a 1.2 metre-long robot called the Ice Crawler. The robot is designed to take a rope to a person in a dangerous situation, for example, on thin ice or very soft snow.
The robot runs on two 12-volt drive motors – one on each of the tracks. These are powered by a 12-volt battery. A plastic tube carries the control panel’s wiring. It also holds the rope that pulls the victim back to safety. A video camera is attached to the front of the robot. This helps the rescue team to see where the Ice Crawler is going in snowy conditions or on very rough ground.