We're bringing you a special encore presentation of our series, Lewis and Clark.

In 1804, at the behest of President Thomas Jefferson, Mary Weather Lewis and William Clark

set out to explore and map U.S. Territory in the West, acquired after the Louisiana

purchase.

Together they assembled a group known as the Corps of Discovery to accompany them on their expedition

to find a route to the Pacific Ocean and change the map of North America.

The sun is beating down and the hot wind blasts your face.

Ahead of you, Captain's Mary Weather Lewis and William Clark,

stride toward the only hill that's visible for miles.

They are the leaders of this expedition, but you wouldn't know it to look at them.

Wearing buckskin pants and white linen frocks, they look just like you.

The only hint of their seniority are the round

cockade ribbons on their black felt hats.

It's been three months since you and the rest of the core of discovery set out on the Missouri River on a mission to explore

uncharted U.S. territory and reach the Pacific.

But right now the expedition is investigating a strange piece of information it learned from local native tribes.

You look at the lonely hill ahead.

There's something eerie about its isolation and the mass of birds that swarm around it. You pick up the pace to draw a level with Captain Clark.

Captain? Yes, Sergeant. You think it's true what the Indian said? Tiny men with big heads live on this mound and kill all

trespassers.

Clark shoots you a withering look.

No, of course not.

...