This part of the work is from 10 to 15 feet 8 Inches—the mounds of various hights—the base of the work is from 75 to 105 feet, steep inward and forming a kind of Glassee out wards
the Same Cours continued i e
N. 32°W. 96 yards to the Commencement of a wall from 8 to 10 feet high this corse not on the wall but thro to the commencment of another detached
N. 81° W 1830 yards to the river & above where this bank Strikes the river is the remains of a Circular work
in this Course at 533 yards a Deep Pond of 73 yards Diameter perfectly round is in the Course of the bank which is about 8 feet high, from this Pond the bank it lowers gradually—a bank about the Same hight runs near the river, and must have joined the main work at a part which is now washed into the river, this is also perfectly Streight and widens from the main work, as the river above has washed in its banks for A great distance I cannot form an Idear How those two long works joined—where they Strike the river above, they are about 1100 yds apart, I am informed by our freench interpeters that a great number of those antint works are in Different parts of this Countrey, on the Platt River, Kansus, Jacque, Osarge Mine river &c.
Small one is on Island opposit the one I have Discribed, and two of our Party Saw two of those antient frtresses on the Pittiet Arc Creek on the upper Side near the mouth, each angle of which were 100 yards and about 8 feet high-
[Clark, September 3, 1804]
3rd September Monday 1804. Set out at Sun rise, verry Cold morning clear and but little wind from the N W. we proceeded on, the river wide, took an obsivation below Plumb Creek which mouths on the S S. this Creek is Small & corns in between 2 white banks, Great quantities of Plumbs of a most delisious flavour, I have collected the Seed of 3 Kinds which I intend to Send to my brother, also Som grapes of a Superior quallity large & well flavoured, the river is riseing a little, Several wild Goats Seen in the Plains they are wild & fleet Elk & Buffalow is verry plenty, Scercely any timber in Countrey except a little on the river in the Points. Saw Some Signs of the 2 men who are a head, Colter has not over taken Shannon Camped on the L. S. at the edge of a Plain-