Dust everywhere this time of the year, especially near dirt roads, as in the case of Bosque Santa Lúcia. Spot doesn't seem to concerned about the weather.
I'm guessing that this unidentified snake was looking for a place to hide from me. Unfortunately for the snake, the hole wasn't big enough to get out of sight. When I left two hours later, it was still in the same position.
I was doing some work on the computer at the Bosque yesterday, when I discovered that I have a roommate. This friendly tarantula climbed upon the top of my table and proceeded to check things out. Only when I started photographing her did she show some urgency in getting out of sight.