Total newbie, but have found several points and flakes on a small piece of land I use for a garden. Doing some research on finding Indian campsites, and came across fire cracked rock as being a clue. I have found some pictures on here and google, but not much info. It got me thinking because I have found several rocks with reddish and black colorations in my garden plot like pictures I have found so far, but thought they were just naturally occurring. I will attach the pictures of the rocks I have, and would love some input. Would also love to see pictures of fire cracked rocks if anyone has any!