Missouri has a lot of stone bottom creeks with little silt. Most of the creeks I hunted were bordered by natural land or cattle land.
I had one spot Northwest of Columbia, Mo, it was a valley that had hills and bluffs on 3 sides, north, west and east, south was open, farmed and hills bordering it were wooded as were the hills around valley, it had a lot of natural raw flint in hills, and also had a junction where a creek emptied into a stream, the creek was spring fed. It was a natural place to camp and winter and they did.
The valley was farmed and I got farmer's permission to hunt it. Only cost me a case of work gloves I was given by telcom company I worked for to give out to farmers where our fiber crossed or bordered their land.
Found so many artifacts there.