Karttapullautin 3D viewer (stereo pair). Wait for images to load. Relax and look through the screen. Use arroy keys to move around the map, x and z to zoom in/out.Karttapullautin 3D viewer (stereo pair). Wait for images to load. Relax and look through the screen. Use arroy keys to move around the map, x and z to zoom in/out.