The photo shows two spiders attached together, and the camera angle makes them look a tad larger than they really are (they're about the size of an adult's hand). They also tend to seek out shade during the daytime, so it's not terribly unusual to see them charging across the desert at you -- only to come to a screeching halt when they reach your shadow.
i caught 10-20 of them in iraqu dang things are UGLY!
BalasPadam