Grew up here my whole life & had never been or heard of Dundee Falls. It was only about 1/2 hour from our house. We parked in a dirt and gravel parking area off of Dundee Wilmot Road. An unmarked path at one end of the parking lot led to a stream valley. We heard you could walk to another falls, but we choose to drive about talking to a variety of people.
It's not too far from Stark Wilderness if you wanted to combine them.