Saved iMessage Audio clips - Where are they stored?

A very precious audio message came my way via Messenger this evening, and the app offered for me to save it once I finished listening to it, so of course I saved it. Now I am wondering where these recordings are stored to on my device, and how I can access them in the future. I'd like to know several things: - how do I access these saved recordings? - is it possible to export them via email, messenger, or other applications so that I may save them to external storage? Running ios 15.5 on Apple Iphone 7 Thanks!