I'm writing a scene where a character falls out of a tree, and the first sign of this is hearing it. They fall from high, so there needs to be a really loud impact sound, but I don't want to call it a "thud" because it sounds very....POW BLAM KAPOWish to me. It needs to be a very serious scene. Can anyone think of how to describe it? Sure, there will be a crack of bones breaking and all that, but I really need that impact sound. Maybe I should just write "She heard the impact---hollow and flat, but pounding and terrifying." or something. thoughts?