The Canadian Shield is a large geological region that covers parts of eastern and central Canada, extending into the northern United States. It is characterized by its ancient rock formations, primarily composed of granite and metamorphic rocks, which are some of the oldest on Earth. The Shield is rich in minerals and natural resources, making it significant for mining activities. This region is also known for its diverse landscapes, including forests, lakes, and rivers. The Canadian Shield plays a crucial role in the ecology of Canada, providing habitats for various wildlife species and supporting numerous ecosystems. Its vast wilderness areas are popular for outdoor activities like hiking, fishing, and camping.