Can you see what I hear? Blind human echolocators use visual areas of the brain

Certain blind individuals have the ability to use echoes from tongue or finger clicks to recognize objects in the distance, and use echolocation as a replacement for vision. Research done by Dr. Mel Goodale, from the University of Western Ontario, in Canada, shows echolocation in blind individuals is a full form of sensory substitution, and that blind echolocation experts recruit regions of the brain normally associated with visual perception when making echo-based assessments of objects. - Source      

Can you see what I hear? Blind human echolocators use visual areas of the brain