About that gate at Roget Close
The lock doesn’t open with a key.
The means to open the gate is in that sculpture.
Look at what’s in the sculpture…
If you can make it work, the gate will open.
[spoiler]And by “work,” I mean “do something that is suited to the kind of game you’re playing.”[/spoiler
The sculpture contains a mirror…
This is the big spoiler coming up…
…which will reverse the name of an object you put on the pedestal.
You should have at least one thing that can, or can be turned into, another word when spelled backward. Put it on the pedestal.