Here is the same area excavated out. What was removed you ask...well see below.
Large, deep TREE roots among our sandy soil. This is not ideal by any means.
These roots range from 1/4 of an inch to nearly 5 inches in width. These roots inevitably traverse the length of the green which is why we periodically prune the roots of the Eucalyptus trees with our trencher. This process severes the roots from their growing point and kills the roots farther from the tree. The only problem is that our trencher can only cut to a depth of 3.5 feet. Every little bit helps!
Joe Oles is pruning the roots of the Eucalyptus with a trencher. Below is a photo of the final results that will hopefully improve the health of the green for a few years until we will need to do this all again.