DSC
Superstar
If that's a tree hole it seems very big and a pity it's not the (now standard) tree trench with lots of expansion space and the plastic soil 'containers' that prevent compaction. (https://www.theidealgarden.com/product/tree-root-protection-panel/A hole is being dug in front of the building. Could it be that trees are on the way? Also, a new wall in the yard.