Mass Audubon's Wicked Big Rock Walk

You've done "rock walks," right? Wandering the beach identifying the different rocks we've picked up? Always lots of fun. Well, get extreme. It's time to go big. Join John Galluzzo for a geology lesson on the run, as he seeks the biggest freestanding rocks around, the glacial erratics of the South Shore, from Weymouth to Cohasset. The beauty of these rocks is that they've become landmarks for generations of local residents, and each one has its own human story to tell.