I found it at the base of one of the sandstone columns over the WRL spillway. I was leaning over it to get a shot and it whirled around and faced me. This is the best view I've had of those beautiful iridescent fangs (called chelicerae). They are not aggressive but since I knew I had at least one good shot, I backed off and left it alone.
Bold Jumper (Phidippus audax)