This little GEM is also home to Stop #1 on our Explore the Bruce Adventure Passport Contest this year. Hint: ...The Grotto... In the heart of a World Biosphere Reserve, the 'Bruce' is a place of global significance. The massive, rugged cliffs of the park are inhabited by thousand year old cedar trees, overhanging the crystal clear waters of Georgian Bay. The park is comprised of an incredible array of habitats from rare alvars to dense forests and clean lakes. Together these form a greater ecosystem - the largest remaining chunk of natural habitat in southern Ontario.