That’s Not Even A Synonym For Shallow
The narrator segued over to the mountains because he felt they are the opposite of rodents. While this is correct on several points (rodents are small lifeforms, whereas mountains are huge and non-living), he missed some of the finer details. For instance, both rodents and mountains are naturally occurring solids. A more appropriate choice would’ve been a giant mass of ferrofluid (man-made liquid metal that can do this).
I’m still pointing your attention to these Mountain Time Jack-o’-lanterns because I know that, eventually, you’ll send me pictures of your own pumpkin art to add to the page. Right?