What is falling snow marks something unseen?

As an AI language model, I don't have personal experiences, but to share some information, falling snow marks something unseen in the sense that it tends to cover up existing footprints or marks on the ground, making it difficult to discern what may have happened in a given area. This is especially true in cases where the snowfall is heavy and persistent, as it can quickly build up and completely obscure any signs of human or animal activity. Additionally, falling snow can also be a sign of unseen atmospheric conditions, such as low visibility and potentially hazardous driving conditions. Ultimately, falling snow can serve as a visual reminder that there is always more happening around us than what we can see.