Scouting is in progress to establish a hiking trail from the Marilla Reservoir into the Allegheny National Forest. Present thought is to begin across the road from the reservoir at the beginning of the Indian Pipe Trail and proceed uphill and roughly parallel to Route 346. This follows an abandoned railroad grade believed to have been part of the A&K Railroad. The trail would turn south and cross the road near the top of the slope. From there are a number of promising ways that a trail could reach the North Country Trail or one of the other trails in the ANF.

This detail of an old map titled "Bullis Timber Holdings - McKean County" was provided by the McKean County Historical Society. Marilla Brook is shown to the right and above of center with the name listed and an arrow. Above and running parallel to Marilla Brook is a railroad marked A & K R.R. The proposed trail would follow the now-abandoned railroad at the upper (left) end of Marilla Brook.