Perfect Duluth Day

What’s the deal with the stairway at Birchwood Park that leads down into a ravine?

On the edge of Birchwood Park, a small playground park at 222 W. Heard St. in the New Duluth neighborhood, is an old stairway down to a ravine that I’m guessing runs into Sargent Creek. The existence of this stairway is probably common knowledge in New Duluth, but it is kind of tucked away so that others visiting the park are unlikely to notice. And it raises the question of what used to be down there.

So, can anyone enlighten us?