Most likely died of suspension trauma. Within seconds of sustaining a fall in a harness, your blood will begin to pool in your legs, due to constriction of the blood vessels in the legs. Even individuals in relatively good shape can be dead in a matter of minutes. Kind of like bleeding to death without losing any blood. Pretty scary stuff. Fortunately the tree stand industry has come up with some pretty good inventions like the suspension relief straps(carried over from the constuction industry,) and the descent devices which will lower you safely to the ground. Another good point to remember is if you're trapped in a harness for any period of time, remain in a seated position for an hour and have bloodwork drawn at an ER, returning in a couple days to have repeat bloodwork. It may sound funny, but the blood pooling up in your legs is continuously building toxins, which, upon release back to the body depending on the severity, can cause immediate issues, or even long term health problems such as kidney disease. Just an fyi to keep you'ns safe out there.
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