It will contain a number of artefacts carefully curated to represent all aspects of theatre, including backstage, construction, lights and sound and of course, performance.
Peter Bain, the Theatre’s heritage and education officer, is also keen to include a collection of memoirs from both Guild and audience members.
He said: “A live performance is a fleeting experience and once it’s over, it’s over. You can’t rewind and watch it again, you can only watch another version of the same thing.
“That’s why people’s memories of the theatre are so important; after any given performance is finished, memories are all that we have left.”
Appealing for submissions, he added: “These memories might include bringing the kids to see their first ever pantomime, or seeing a famous face tread our boards. Going far enough back, there might even be a few people who still remember when the theatre was a cinema.
“This is all the sort of thing I’d like to see included in the time capsule.”
The deadline to send in items for the time capsule is this weekend and the burial itself will take place on Monday January 16.
E-mail your memories to Peter at [email protected], or by post to the theatre: 66-68 Shakespeare Stret, Dumfries, DG1.