When carefully excavated in three dimensions, the discoloured matrix noted on an upper level of this square turned out to be a fragmented ceramic container left in a depression that apparently had originally been dug to hold it upright. Also note the hearth or 'fire pit' structure shown in the upper left corner of this square.
Viewers are encouraged to read the accompanying course paper prepared for Dr. George Lammers, Interim Director and Curator of Paeleontology at the Manitoba Museum of Man & Nature [now Manitoba Museum] by clicking on Excavation Travelling Exhibit Paper located on the author's Critical Museology Miscellanea web site.
These images are shown in the last Sam Waller Museum Archaeology slide series without the unfortunate Google Sites cropping seen here on the Critical Museology Miscellanea blog site's 8 September 2021 post at https://miscellaneousmuseology.wordpress.com/2021/09/08/archaeology-techniques-slide-shows/ .
See following Contact form for monitored private communication with this web site creator, Paul C. Thistle. It is external to this site on my Critical Museology Miscellanea blog due to the fact that Google Sites apparently has no such function.