BS stands for teams Bullis and salford who have OCD when it comes to clearing their radius, so this is just another cache to help them with their obsession.
Mr. Ducky took a long walk out here to hunt for a certain cache to fulfill a challenge cache requirement and we stopped here on the way back for a quick break.
The tree that the original cache was on was removed by the trail crew. The new location is at about the same height as the old one, but will require a completely different method to access the container.