Possibly IMAX theater at the Houston Museum.

In the 90s, I remember going to a big screen, it was possibly 3-D now that’s kind of hazy. What I remember about this possible short film was somebody, or two people kept finding Scaleybark keys, and within each key was a secret note or something. I also have a visual in my mind of them, possibly in a canoe or kayak in the wilderness finding a key, but I don’t remember anything else about this. Only the fact that I was obsessed with it and I’ve never found anything on the Internet about it. Do y’all know what film this was or anything I can know.