Sal (on Facebook) was the first to get the correct answer. We found this Puff Adder at Thanda House under a stack of fire wood. Due to the cold temperature it was very slow and did not react at all when Letishia took a piece of wood from the pile and discovered the snake.
I captured it and relocated it this morning away from Thanda House. After the release it took a few minutes before this incredibly camouflaged sake moved into the undergrowth.
Puff Adders are one of the most dangerous snakes in Africa. They have a very potent cytotoxic venom and are one of the fastest-striking snakes on earth. Due to the relatively low temperatures at this time of the year this specimen showed no aggression and could be handled quite easily.
This series of pictures were taken by Warren Beets (Thanda Reserve Manager) and myself during the release operation. Thanks Warren!
Well hidden! 
This picture shows me transferring the Puff Adder from the transport barrel to nice spot on the ground (near some undergrowth). 
Placing it on the ground 
Just in front of my GoPro camera 
This is the release from the GoPro angle 
And then the snake disappeared into the bush 
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I don’t like snakes at all, but these were great pictures of a difficult task. Glad to be looking at it just from the photos.
Handsome snake! I didn’t see it in the other photos… I did see an ant in the one clear photo, just about in the center.