<http://schema.org/description>
"The Black Diamond Angle is the most classic piton still made and is the image most people associate with a piton. It's amazing to think that at one time routes were mostly climbed on angles"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.outdoorgearlab.com/Piton-Reviews/Black-Diamond-Angle>