<P> 1960--There are now 72 provincial parks in Ontario, hosting over 5 million visitors annually . </P> <P> 1967--Ontario introduces a new policy that divides parks into specific categories, or classes, with compatible sets of uses . </P> <P> 1970--Polar Bear, Ontario's largest provincial park at 24,000 square kilometres, is created . </P> <P> 1978--Ontario Provincial Parks: Planning and Management Policies are approved by Cabinet giving Ontario one of the world's leading parks planning systems . </P>

What is the largest provincial park in ontario