 Programming is supported by TKDA, providing integrated design solutions for water, wastewater, and surface water infrastructures and facilities. TKDA, connecting water to communities and businesses. More at TKDA.com. If you think about snorkeling, you probably think about a coral reef or the ocean. Well, how about a river in the southern Appalachian Mountains? Paul Garber of Member Station WFDD takes us on a not-so-deep dive along the Blue Ridge Snorkel Trail.