Taughannock Falls State Park, Trumansburg. It is the tallest single-drop waterfall east of the Rocky Mountains. Pronounced Tuh-GA-nick. The falls’ name is believed derived from the Algonquian Taconic (“in the trees”) or Taghkanic (after a Lenape chieftain killed in battle nearby). Taughannock falls carves a 400ft deep gorge through layers of sandstone, shale and limestone that were once the bed of an ancient sea. With a 215 foot plunge, this waterfall stands three stories taller than Niagara Falls.