I was playing on Google Maps looking at possible backcountry CO trips for the summer. I was wondering if they refresh the images with any good frequency. Specifically if frequent enough whether one could use Google Maps to gage snow conditions. With the resolution it would certainly be valuable if the refresh was weekly (probably wishful thinking) but might be useful if only monthly. Anyone know? Still amazes me what one can see with these sat images. At our farm, one can clearly see barns in fields with good resolution (but not my cabin in the woods).