OOps so sorry, yes a drop rock is a rock that is totally out of place. They are dropped by glaciers and are amazing!!! This one is about 1 1/2 hours from our home. We went to the top of Mt Pinos with a friend to star gaze. What other info do you want on it? I will be happy to give more :)
That is a site you might enjoy :) Mt Pinos is in Frazier Park California :) Ask away :)