DragonflyTV . Podcast - Rock Climbing | PBS KIDS GO!

Source : http://kids.pbs.org/dragonflytv/show/rockclimbing.html...

We're rock climbers who love to scale cliffs in Aspen, Colorado. We know that some formations are easier to climb than others and we wondered if knowing more about the kinds of rock we were climbing could improve our technique. So, our DragonflyTV question is: How do different rock types affect our climbing?