Adding additional taxonomies to wordpress taxonomy page

// 12 - difficulty
// destination
// get Id current taxonomy
$this_term = get_queried_object();

        $taxquery = array(     
            'posts_per_page' => 1,
            'post_type' => 'packages',    
                      'tax_query' => array(
                               'relation' => 'AND',
        array(
            'taxonomy' => 'difficulty',
            'field'    => 'id',
            'terms'    => array( 12 ),
        ),
        array(
            'taxonomy' => 'destination',
            'field'    => 'id',
            'terms'    => array( $this_term->term_id) // Id current taxonomy
        )
    )
        );