The Hawaii license plate features a rainbow and I know why. I’ve been on Kauai for six days and I have seen more rainbows in those six days than I’ve been in my entire life including double rainbows and complete rainbows that cover 180°. We see rainbows every day because it rains every day and the sun is out every day. The Spouting Horn is a fascinating phenomenon where the incoming waves force water through a hole in the lava rock creating a spout that occurs with every wave. On the late afternoon we visited, a rainbow highlighted the scene.