Wow I loved this game! You did a great job rolling the story into the game mechanics, and I have to say having an interesting story in a simple puzzle game is impressive to pull off. The puzzles seemed daunting but were all reasonably solvable, and I definitely chuckled a few times at the dialogue.
Not sure if it was intentional, but on a few levels I was able to solve the puzzles using less of the rocks and tunnels than it seemed I was supposed to. Didn't necessarily hurt my experience, just made me like I was puzzlin' good.
Great job, an exceptional first jam submission! Look forward to seeing what you put together in future jams!