HBO has ordered a new miniseries that boasts a lineup of Hollywood A-listers among its producers —  including Tom Hanks, Edward Norton, Brad Pitt, Dede Gardner, Tim Kelly and Adam Leipzig, reports B&C.

The six-hour project, “Lewis and Clark,” will examine the expedition of explorers Meriwether Lewis and William Clark.

It is based on the book “Undaunted Courage” by Stephen A. Ambrose, the report notes.

Said HBO Programming President Michael Lombardo: “In Lewis and Clark, we can see American idealism and the breathtaking natural beauty of the continent, as well as the complexities and tragedies of what came to be known as America’s ‘manifest destiny.’ We are tremendously excited to bring together this incredible group of talents to tell a seminal American story.”