Red and black seem to mar the icy glacial landscape of southern Iceland. The gray-black filaments are past glacial melting outbursts called jökulhlaups. These abrupt flooding events gush down this outwash plain called Skeiðarársandur, one of the world’s largest. The Skeiðarárjökull Glacier reaches down from the top left of the image. The plain is mostly devoid of vegetation, but red coloring indicates low moss, birch shrub, and other grass species.