I have to say, Rob did pretty well hiking & climbing around the crevices of Sandstone Quarry in Red Rock…for a flatlander at least.
So we can see the five caterpillars on the outside of the tent. That’s what lives inside the tent. The tent is stuffed with them, just stuffed (look at the image below.)
The caterpillars apparently do this to stay warm and digest food. The Great Wiki, of course, has an entry about tent caterpillars as a whole here.