For me the best image to take of this immense landmark is a frontal shot taken along county road 5-10 with ample sagebrush as a foreground. If you have the time and energy you can access the parking area via Cabin Creek Rd to explore the rock on foot. There are fairly clean bathrooms here as well as some plaques telling the history of the area. Apparently some of the oldest human sandals were found in nearby Fort Rock cave that were made from sagebrush. The trails here will take you all through and around the rock; it really is something to see up close. Be somewhat wary of the fact that there was a cougar encounter here just a few months ago.
There are a couple of more points of interest in the area as well albeit a bit of a drive. You may wish to check out Hole-In-The-Ground, Crack-In-The-Ground as well as the Lost Forest.