Lewis and Clark are back in St. Louis. At least, the Lewis and Clark re-enactors are back in St. Louis, taking a winter break from their journey along the historic route. The group will be begin again in April. It is expected to take them two-and-a-half years to re-enact the famous exploration. The boats have been parked in downtown St. Louis for now. Crew members say it has been tough to make the trip upstream. Many places along the river are very shallow.