Helicopter is a boisterous must run rapid where the river channel constricts, dropping steeply between a large vertical cliff on the left and a field of sieved out boulders on the right. Giant 500 foot granite slabs to the left, sometimes with a cascading waterfall appear just before it. A small beach and scramble above on the left affords a scouting opportunity. Three rowdy holes must be punched before a right turning airplane turn finale.