Prayer flags are omnipresent in Bhutan. They shape the face of the kingdom. Whether in long lines on poles or cords, between trees or on bridges, you see them fluttering in the wind almost everywhere. And of course, it is the wind that carries the printed prayers or mantras into the world. Prayer flags come in five colours. As with Tibetian prayer flags blue represents the sky, white the clouds, red is fire, green symbolizes water and yellow soil.