GMap Array Physical not Terrain

In the GMAP array example, it states that an acceptable value for maptype is "Terrain", which does not work. Search through the module I found:

$map['Google']['Physical'] = array(
        'title' => t('Terrain: Physical feature map.'),
        'default' => FALSE,
        'help' => t('Map with physical data (terrain, vegetation.) Internal name: G_PHYSICAL_MAP'),
      );

The correct option is "Physical" not "Terrain".