The footage in this film is astonishing! But as you also watch and listen a whole new world beneath the surface of Valley pool opens up. The sounds and sights are amazing. Huge beds of zebra mussels the like you have never seen before. Vertical shelves like cliff walls dropping off into twenty-eight feet. Snags galore! and the Jubilee wagons still sitting on their rails since 1934! And the carp....Hibernating in the silt and what comes next is....