snipped by me for focus
Maybe whoever is responsible was worried they had been driving too long and too far, saw the driveway provided enough room to turn around, saw the culvert and tossed/dumped/hid whatever they needed to?
Pure speculation. I have been trying to figure out the ‘why’ regarding this location was well. So so curious to know what they are searching for, possibly finding there...
I believe whoever did this thought they were really smart. I am betting they avoided obvious dump locations like lakes or ponds because they knew they would be quickly searched. I expect when things begin to come to light, we will see some work was put into diversionary tactics and attempts to establish an alibi/decoy locations, etc...
IMO MOO JMO and such
edit for typos