The first of the drilled angle holes we found on the route.  You can see the two grooves on the left side, which are a dead give-away, and you can also see that this "corner" is completely blank. Richard slid a 5/8" angle into this hole, which fit perfectly. However, you can also just see the start of a crack forming a few inches above this hole. This crack took two perfect stoppers, so Richard simply bypassed this hole without using it.