lifelong and vindictive enemies declared a truce while they gathered the
material, and savage hostile tribes suspended their wars for a time.

On the north side of the Missouri, at a point in what is now known
as Clay County, South Dakota, Captains Lewis and Clark, with ten men,
turned aside to see a great natural curiosity, known to the Indians as
the Hill of Little Devils. The hill is a singular mound in the midst of
a flat prairie, three hundred yards long, sixty or seventy yards wide,
and about seventy feet high. The top is a smooth level plain. The
journal says:--

"The Indians have made it a great article of their superstition: it
is called the Mountain of Little People, or Little Spirits; and they
believe that it is the abode of little devils, in the human form, of
about eighteen inches high, and with remarkably large heads; they are
armed with sharp arrows, with which they are very skilful, and are
always on the watch to kill those who should have the hardihood to
approach their residence. The tradition is, that many have suffered from
these little evil spirits, and, among others, three Maha Indians fell
a sacrifice to them a few years since. This has inspired all the
neighboring nations, Sioux, Mahas, and Ottoes, with such terror, that no
consideration could tempt them to visit the hill. We saw none of these
wicked little spirits, nor any place for them, except some small holes
scattered over the top; we were happy enough to escape their vengeance,
though we remained some time on the mound to enjoy the delightful
prospect of the plain, which spreads itself out till the eye rests upon
the northwest hills at a great distance, and those of the northeast,
still farther off, enlivened by large herds of buffalo feeding at a
distance."