GeoTrack Disc – Black Bear Track. The GeoTrack Disc are approximately 17.5″ to 20″ in diameter and come with an acrylic stand, that can sit on a table or be put on a wall. Each one individually made and fired two to three times. Now a part of my show, Last Glance, at Montana Bliss Artworks (101 S 7th St, Hamilton, MT).