A couple of things of interest in the photo and the Info...
First if you look at the Cairn there is a curling rock at the top..
Second the word in the plaque is spelled Wetaskewin.... {Wetaskiwin today}

Wetaskewin Spatinow
Erected in July 1st. 1927 in Commemoration
of Treaty of Peace Made in These Hills
Between the Blackfeet and Cree Indians
1867

Wetaskiwin
A Community Rich in History, People and Pride
The Place Where Peace Was Made
The Cairn Was Moved Back into the City Limits in 1980
To Commemorate The
100th. Anniversary of The City of Wetaskiwin
on July 28th. 2006