ALAN SOLOMON / CHICAGO TRIBUNE
	Along the trail, signs point the way near Selby, S.D.

On a bluff overlooking the Missouri River, a sandstone obelisk stands as a tribute to the lone explorer who died on the Lewis and Clark expedition to the Pacific Ocean nearly 200 years ago.

Local history buff Bev Hinds says the monument marks the success of the 1803-06 mission even as it serves as a memorial to Sgt. Charles Floyd, who is believed to have died of appendicitis. "The fact that they survived all the accidents that happened to them" was incredible, Hinds says. "You couldn't do it today."

But states along the route are hoping the upcoming bicentennial of the Corps of Discovery will lure tourists and their dollars to trek the trail.

Between 20 million and 30 million people are expected to retrace at least some part of the trail between 2003 and 2007, says Mark Monson, chairman of the Iowa Lewis and Clark Bicentennial Commission.

"I think the reason that people are going to travel the trail is because it's about America," he says. "It's kind of like the genealogy of the United States. ... I think it's good for people to understand how we got where we are."

On a recent summer afternoon, the Stauffer family of Roswell, Ga., stopped at Lewis and Clark State Park in Onawa, about 30 miles south of Sioux City.
 

	RICK GRAETZ / THE ASSOCIATED PRESS
	The explorers' journals called this Montana formation, the Hole in the Wall, one of the area's "scenes of visionary enchantment."

It was the first stop in their three-week trip along the trail.

"We're just always amazed by the big sky of the West," says Kirk Stauffer, 44. "The discovery of the West, that sense of discovery, is what inspires me."

Bill "Buffalo Bill" Sanders, a park volunteer clad in an elkskin coat and buffalo cap, estimates that nearly half of the park's visitors come because the explorers camped there in early August 1804.

In nearby Sioux City, organizers are planning a pageant and a play to commemorate the trip. They'll also hold a series of public lectures this fall about the area's people, plants and animals 200 years ago.

An interpretative center, which will feature murals of the expedition and hands-on exhibits, is set to open in September.

"I think it's a chance for us to capitalize on economic opportunity, increased sales, increased occupancy," says Skip Meisner, one of the organizers. "I see it as a way to manufacture and have new product and to have new business start-ups."

Other Midwest events include Illinois' celebration of the expedition's departure from Camp River DuBois; Missouri River communities in Kansas will salute the first Independence Day in the American West; and in Nebraska, organizers will celebrate the expedition's first meeting with American Indians living in the West.
 

	CHUCK FADELY / THE MIAMI HERALD
	On their journey 200 years ago, Lewis and Clark saw vast herds of bison. Today, few remain.

Lewis and Clark returned from their trip laden with journals describing the people, plants, animals and landscape they encountered.

In one respect, they returned empty-handed: They discovered that the Northwest Passage to the Pacific — a long-dreamed of waterway through the United States that would link Europe to Asia — didn't exist.

Experts say it took years before people understood what they really brought back.

"It was the highway of the time that opened the West," Hinds says. "By the time they got home, they met people who were already heading out.

"It was a marvelous undertaking. It really was."