Nature can find unique solutions to problems.
I encountered this tree and its roots while out on a walk yesterday in Somerville. I love how the tree’s roots are following all the contours of the sidewalk. Parts of it are even replacing the cracks between the sidewalk as well as filling in the square area of the original planting site.
It seems a lot of trees just push the sidewalk up in most cases, I haven’t seen them grow so square before–so accommodating with our concrete.