Darn! I must have somehow exported it before I got it properly finished. Interacting with the angel is supposed to send you to a present day, version of the shrine and a brief conversation with the wizard. And the cave had Marabell's ghost who explained the mystery of the world and an easter egg I had a lot of fun making. Maybe I'll make a video of the end of the game so people can at least see what was supposed to happen.
Viewing post in Isolated Future World jam comments
There. It's a low quality recording and it didn't even pick up the sound track, but here's the ending. You should be able watch it right in Drive.
https://drive.google.com/file/d/1vEQGVzhgPfxkGFvfZlCiQE9qQhHMVrV3/view?usp=drive...