For example, in 1943 an aircraft crashed on the Franz Josef Glacier about 4km up from the terminus. Six years later parts of the wreckage appeared at the glacier front. Lower down the trunk the rate of flow slows as more and more ice melts in the warmer conditions. Here ice flows becomes directed towards the surface to replace ice melted from above. This flow brings rock debris from within the glacier to the surface, where it accumulates as moraine.
General movement is in the direction of the banding within the ice.
Near the Termius nearly all the ice has been lost, and most of debris from inside the ice now lies on the surface. Though the glacier front may be stationary, the ice near the Main Divide carrying greywacke rock from this area into the schist terrain at the glacier terminus.