I investigated the area circled above and couldn't find anything to match this rock pattern shown. I agree the white lizard pic is around the same area, I have a feeling that that picture was taken closer to areas highlighted. I reckon the white lizard pic has been taken from the Mexican side of the border, on the little knob, to the left and under the first green highlighted range. I will have a roam and check this out.
I reckon if the background ranges are a true match, then the red lizard pic is probably taken in Mexico, closer than these ones. Off to Mexico I go... oh, and fuck cougars
Let me know if there are any other areas you want checked.
Sorry, I can't get a decent picture of it but this is my best guess for the white lizard pic... it looks better on screen... I just could not get clear weather either which makes it worse.