Mine Shaft is a double black diamond bump run under the Oak Street Lift line (lift 8).
This run is steep, and has lots of fun cliffs and rocks to jump off of, however, it is not mandatory to jump off of these cliffs or rocks to get down the run.
Mine Shaft typically does not hold snow very well, therefore it does not offer great skiing, except for on powder days.
This run does not get skied very often because of the condition of the snow, which is always variable.
Mine Shaft is usually pretty icy.