We only saw two snakes. This one was pretty big, maybe 6–7 feet.
It's tentatively identified as some rat snake, Elaphe.
The other snake that I saw was either a Brazilian coral snake or one of its mimics,
but I wasn't quick enough to photograph it.
In some areas there were lots of termite mounds.
In this one, they had opened up their ventilation slits and were busily tending them.