Dr. Bondar talks about making this image:
Location of Prince Edward Island National Park.
The Atlantic Red Cliff is a Coastal and Marine Biome. The sandstone bedrock drives from glacier-packed ancient river deposits. It is not so much the forest growing to the edge of the cliff but rather the cliff losing its edges and, with them, its Forest Biome topping as Atlantic waves erode the bedrock.
Here you can see some of the forms and boulders normally underwater since the tide is out. Coastal wave action undercuts and erodes the soft sedimentary soil and rock coloured by red iron oxide. The green forest on the right on the top of the clay cliffs is endangered by wind and water erosion. Because the cliffs are fairly soft and continuously eroded, the trees eventually fall into the water. The bright green of these resolute trees and greenish yellow Irish moss growing on the rocks below pull the eye away from the predominant red.
Once connected to the mainland, this island remained through ocean levels rising from the last glacier melt, slow rebound from its weight, and tectonic uplift. Part of the red algae family, Irish moss ranges in colour from greenish yellow through red to dark purple. Irish moss has a holdfast, a root-like structure, that anchors like glue on smooth rocks.