In a new press release, HBO has announced a new miniseries Lewis and Clark, with production starting this summer. Starring Casey Affleck and Matthias Schoenaerts, and with executive producers Edward Norton, Brad Pitt, Dede Gardner, Tom Hanks, and Gary Goetzman, the series will be based off the book Undaunted Courage by Stephen E. Ambrose.

From the press release:

Lewis and Clark will tell the story of America's first contact with the land and native tribes of the country west of the Mississippi River. The miniseries follows the epic journey of the Corps of Discovery and its captains, Meriwether Lewis and William Clark, who traverse uncharted territory on a mission to deliver President Jefferson’s message of sovereignty as they search for his fabled all-water route to the Pacific.

Are you excited?