This is the Ski Bowl Connector to the Raymond Brook Downhill
. It's a slow (sometimes steep) climb through the forest to the junction with the Raymond Brook Trail. It follow the brook and crosses it at one point. There are a couple other tributary crossings as well. At the junction, turn right and run the downhill section on the Raymond Brook Trail out to Rt 28 or reverse direction to go back the way you came. Either way is fun.
The climb in is pretty slow so not too much to worry about, but either way down will be quick, and there are some tricky rocky sections.