Pay attention to the date of the photo too. Sometimes they use some filter that changes the appearance of conifer and hardwoods, and if it is winter, the hardwoods have no leaves and look like ghost trees The brush/salal etc. do not show up at all. For example, the Cathlamet area and West on the Columbia river shows images taken in March of 2016. Many reprod areas appear to be free of brush and young alder and the image appears to show bare ground. But if you click back to the previous year's photo, the entire area will be completely engulfed in brush. There may be 20 foot alder trees in an area that shows no growth.