modules/custom/bdp/templates/bdp--node--research-site.tpl.php
<spdom>
<descgeog>
<?php print render($content['field_description']); ?>
</descgeog>
<?php if (!empty($content['field_coordinates'])): ?>
<bounding>
<?php print render($content['field_coordinates']); ?>
<?php if (!empty($content['field_elevation'])): ?>
<boundingalt>
<altmin><?php print render($content['field_elevation']); ?></altmin>
<altmax><?php print render($content['field_elevation']); ?></altmax>
<altunits>meter</altunits>
</boundingalt>
<?php endif; ?>
</bounding>
<?php endif; ?>
</spdom>