Adding to your post...here are some thoughts. Re: the river...yes, I agree. Since the river is not fast moving and had they drowned on their own accord--it would seem likely they would have been found and not traveled down stream getting stuck somewhere. I listened again to crime sleuth Andrew Rule's video on RH and CC's disappearance that he posted 5 months ago; he seems confident that RH and CC's disappearance is based on misadventure with a pack of dogs consuming their cadavers and not leaving any trace evidence. I am skeptical about that hypothesis--namely, having had two sets of two large 100 pound Rottweilers over a 25 year span and having watched them chew on fresh over a foot long pig arms with hoofs--seeing first hand what was left behind after a week or two of constant chewing--bone fragments could always be found in the dirt... bone pieces the size of a dime, and some like broken pieces of a popsicle stick. I doubt a pack of dogs would break down and eat an entire human skull, or the femur bone. And any of the other large bones the dogs chewed on, imo, would have left some bone fragments--even if the dogs eventually dragged all the remains back to a den area. Re: RH's truck key. In the video AR also states that RH's truck was locked when found...making it seem like RH and CC locked their truck when they left their campsite. IMO, since they were within close walking distance to the river, and had they decided to go to the river to sit or fish--they probably wouldn't have locked their truck. I think the locked vehicle indicates an excursion further from their campsite, as well as the likelihood that they left and never returned to the campsite. The burnt out campsite appears to have had a few things in and around it suggesting to me that they only planned to be away from the campsite for a few hours...which in turn led to a flash fire occurring...something was left cooking, turned on, or as Tootsie pointed out--a refracted sunlight heat related fire started off of some object in or around the tent area. I recall one poster saying months ago they thought it possible that RH, CC, and a companion with a vehicle all got lost in their vehicle somewhere. The only problem with that theory is RH built the roads in that area decades ago, and knew them well. A predator stalking or coming upon RH and CC at their campsite seems problematic because of their locked truck, unless they locked their truck while sleeping--but why would they do that? As we all noted, the tent canopy appeared to be tied to the truck roof racks and the tent was very close to the truck. I think had the truck been unlocked when found, it would support someone entering their campsite while they were there--cooking, eating, or sleeping and abducting them. My conclusion to what might have happened...RH and CC met someone that was camping close by or someone drove up to their campsite. This person(s) could have followed them to their campsite having seen RH camping there several weeks in a row before bringing CC back to the campsite, they might have observed RH and CC traveling in their truck or seen them at the Wonnangatta Station when RH made his last radio call, or they possibly listened in on RH's last radio call to his friends, and decided to track RH and CC to their campsite. Since no indication exists as to happened to RH and CC--more than likely, imo, RH and CC locked their vehicle, took the drone, and willing left with someone in a vehicle. What happened after that is anyone's guess. I don't think I have ever pondered a case as much as this one--wanting some resolution to make sense. Not sure if even this story fits the bill.