Here's the description as posted on their home page:
Canon and American Park Network are pleased to bring the
6th Annual Photography in the Parks free digital photography
workshops to your most popular U.S. National Parks this summer.
Take part in a photo or video walk with seasoned professionals
who share their experience taking landscape and wildlife
photographs and shooting high definition videos using the latest
Canon digital technology. Learn to improve your photo composition
skills and tap into your inner artist in some of the most iconic places
on the planet—from Acadia to Zion.
Bring your imagination--we'll do the rest.