[Clark, August 21, 1804]
21st August Tuesday we Set out verry early this morning under a Gentle Breeze from the S. E Course S. 82° E 3 mes to the upper pt. of a Bluff on the S. S. passed Willow Creek and Some rock below the mouth of the Seouex river on the Starboard Side those Clifts are about 170 feet high, this river heads with the St. peters and is navagable 75 Leagues (by the act. of Mr. Durien) to a fall of near 200 for, 2 large & Som Small Pitchs below the falls on the right a Creek corns in on which the red pipe Stone is percured, & in the praries about, a place of Peace with all nations.