<http://schema.org/alternativeHeadline>
"From the Kolb Studio at the Grand Canyon to a Civil War-era farmhouse in Virginia, some structures that nature didn't create could use a helping hand."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/wilderness-resources/stories/the-push-to-preserve-human-history-at-us-national-parks>