What if it isn't that the light has been arranged to fall on the boulder, but that somehow the light makes the ground swell up into a boulder.
Perhaps the sign 'boulder room' doesn't refer to the room you sit in, but the one through the window: the room with the light that makes the boulders.
Welcome to the Planet! We're a small but unrestrictive community and customized Mastodon server.
We welcome anyone who wants to come join and whatever language you speak! Especially if you're a creative type, queer, a nerdy enthusiast of Something, you'll feel right at home, but we're proud to be a friendly and welcoming community.
We also have certain features that don't exist on most mastodon servers, such as being able to post to only other members of the Planet.