Single image to represent "Escape"?

Aside from a skeleton key or keyhole, any ideas of a single image that could represent "Escape"?

Working on an event shirt that has multiple events, one being an escape room. Since the escape room is just one part, I need to define it with just one image, leaving room for the other event images.

Great design resource

100 Things Every Designer Needs to Know About People (Voices That Matter) Submitted February 14, 2018 at 04:09PM by Tristax http://ift.tt/2CkWMOL