When you first see the lizard, snap off a shot right away. Don't mess with settings, just let auto focus do its thing and then get something, anything, into the camera.
Now you can slowly move into a better position, take another quick picture, then fiddle with your camera making adjustments to your liking and take even more pictures.
If you are lucky you may have by now earned the lizard's trust and he sees you as not a threat. Now you may slowly move again, get down to his level and take that really nice photo you had hoped for when you first saw him scurry into view.
At least that is what I try to do most of the time.
The area has several hot springs but this is the only one I have access to anymore without a four wheel drive vehicle. This is right at the source as it comes up from the ground. You can stick your hand in it but trust me, you'll say "yikes!" and immediately pull your hand out thinking well that was dumb.
A short distance away it is cooler and quite comfortable to sit in for a soak. You'll come out with a sulphur smell to your body and a slick feeling to your skin. The hot spring at the Black Rock I mentioned yesterday is about the size of a swimming pool. The sides are steeply sloped as this small bath tub size spring is. So you can imagine a horse or ox going in and not being able to climb out. Yet even in recent times incidents have happened where a dog jumped in, yelped in pain, it's owner jumped in after to rescue her dog and they both perished. The BLM has warning signs posted but things happen in spite of the warnings.
Tomorrow we will move on away from the Black Rock Desert.