Just missed snake with car, son was concerned enough about it that we turned around to make sure it was okay. Kept someone else from running it over. They moved it to the side of the road, it very determinedly continued back across the road, whereby, we directed another car around it. It finally made it to the other side.
A group of three are often seen roaming the park together.
Certainly not a vine to be messed around with, serious amount of spines and tendrils