thank you very much, now this works:
<?php
global $wp_query;
$postid = $wp_query->post->ID;
echo get_post_meta($postid, 'country', true);
?>
<?php $country = get_post_meta($post->post_parent, 'country', true);
echo $country;
?>
<?php
global $post;
$parent = $post->post_parent;
$grandparents = get_ancestors( $parent, 'page');
$country = get_field( 'country', $grandparents[0] );
echo $country;
?>
