This can first be obtained in 6a or 6b. From the start, go forward a little until you get to the path. Take it left and down the steps. Follow the path passed the building. It will eventually turn left, so turn left and follow it. You will get an image. Keep moving forward. On your left is a dilapidated greenhouse, but the entrance is on the other side. Follow the path around it. When you get to the stone wall, turn left. Going straight will take you back into the building and into the next chapter. Turning left into the greenhouse will get you an image and an achievement.