I quite enjoy the mechanic of uncovering new information about a location every day you spend there! It makes for a great tie-in to the jam theme, in addition to the tie-ins made by the radishes and the presence of the Death Mountain. It's not just lip service, it's mechanical!
Unfortunately, the visual execution here doesn't hit the mark for me. There are too many different fonts used, making it hard to parse information effectively. I feel many Wardens will also struggle to give their PCs things to do, since Rover handles drilling/sample collection itself and most encounters boil down to "attacked by a monster." Making Rover less autonomous and giving PCs each a job during sample collection could make for more role-play and encounter opportunities.
That said, I think the Death Mountain is a great threat to build up to (Mothership Godzilla!), and the choice to remain at a location to uncover the full story vs. move on and conserve resources is a really effective one. With some more iteration and visual pass for consistency I can see this being a very strong module!