Description: Red Rock Canyon is a part of Waterton National Park. The red rocks in Waterton are composed of an array of red and green bedrock along a creek. Both red and green rocks are made of argillite. Red rocks contain 3% oxidized iron while green rocks have unoxidized iron. Other colors can also be seen in the canyon. Beige, gray and brown rocks are limestone or dolomite; Black stones result from magma sandwiched between white marble.