Ive wondered this as well but, like many things in this case, LE's words can be taken to mean more than one thing and they never clarify what they mean. "All over" could mean the murder itself, could mean staging, could mean the perp was gone completely/or just on his way out, etc. I wonder if maybe there were some other cameras somewhere that they may have caught a glimpse of him leaving? Trail cams (if they existed?) or maybe from a business that had security cams?
Great post.
Until recently I didn't think they had much beyond the CS on RL's property. As others here have pointed out there are residential properties along C.R. 300 and I think a few businesses, then there are the farms which are businesses.
There had been trouble in the gorge in the past, mainly drug activity I think. A property or properties along 300 on the south side of the road very well may have had a camera say in a backyard, also the family who live across the road could have had one pointed towards the spot where the girls were dropped off, which may have picked up someone way in the background leaving via the main trail.
Early on I was convinced he left via the cemetery, but that doesn't make sense to a killer. Why not conceal as well as you can after you've killed someone, including his appearance? I've driven the roads around the general area in question, and walked the trails. Makes sense to me that LE have camera footage of someone, albeit most likely with little or no detail. Maybe not a frontal shot at all, which could be why they released the still images and then the video in 2019. There really was no reason for him to leave via the cemetery, too risky besides a vehicle sitting there with no one around it could have looked suspicious. Also walking 300 would have been risky.
Very well could be Andersons had cameras turned on, however they're not very busy that time of year so who knows? I still maintain BG somehow knew there were no cameras close enough to the trails for there to be any clear video or still images of him, I'm convinced he'd been there before, perhaps many times.
I included a SS from Google Earth of the main trail area and some properties along there, the CPS building, etc. March of 2005, looks like a recent snowfall had passed through, great for contrast. Walking the main trail last year I saw a barn backed up close to the main trail, there's a business that would have been close to the CPS building, too. Possibility a camera there briefly caught BG as he was walking to a vehicle at the CPS building.