Niagara Glen Nature Area.

The bedrock of Niagara river basin is consist of hard dolomitic limestone, which is a sedimentary carbonate rock rich in calcium carbonate. Due to its nature of being easily eroded, a bedrock could be easily collapsed and create a massive landslide. Niagara Glen Nature Area is an example of bedrock broken into numerous pieces of boulders, which often have pugs vugs that indicates the chemical erosion.