A system, apparatus and method, the system comprising: a scanning device for obtaining three dimensional (3D) information about a cavity surrounding a user, the scanning device comprising a localization and mapping device and an inertial measurement unit; an image capture device for capturing images within the cavity; a processor for receiving the information collected by the scanning device and generating a model of the cavity based on the information; and a display device adapted to display to the user a representation of the model of the cavity, and a route taken by the user within the cavity, wherein the scanning device and the display device are adapted to be attached to at least one wearable item, thereby enabling the user to advance with free hands within the cavity.