The orange color on the rocks is a lichen that grows, giving them a brilliant color at sunrise/sunset. Unfortunately we arrived when it was about to rain AND I cracked the lens on my camera! Anyway, the drive from Port Arthur was really enjoyable and this was a great day spent walking the tracks (watch out for snakes!) and climbing the rocks. The beaches are gorgeous and it's a nice, secluded day out if you move away from the tourist lookouts.