Either by going up Old Goat and continue heading up where you see the sign.
Or else access it off the Cedar Trail at the Resort. A good loop is to go up Gorby Trail, turn left at the top and head past the base of the Haulback T-Bar, up the road to the left of the T-Bar, and keep your eyes open at the top of the hill for a trail coming from above on the right-hand side. Megahurts starts opposite this, going down on the left side of the road as you head away from the Haulback.
Great trail in a deep dark wood. Very rideable in either direction.