Cart Path at Yaupon

We have fixed the cart path by #4 Tee.  We cut out the cart path that caved in and back filled the sink holes with rock and soil.  We have temporarily put Decomposed Granite down until we see if it is going to sink again.  Once we feel good the problem is solved we will patch it with concrete.  Today we are going to do the same procedure at 13 blue tee (similar issue). Here are a few pictures of #4 cart path...