It's very wet, very warm, and rather loud inside of a goat's stomach. Ironically enough, it isn't quite as dark as you'd have imagined. If someone had told you the attendant at the Spelunking booth would have you exploring his stomach instead of a cave system, you wouldn't assume he had the foresight to swallow a glowstick for you to see with, too. Not that the light helps a whole lot when every breath you take diminishes your air supply. The goat only seems to be belching out air, not pulling more in for you. You have a bad feeling this is why you haven't seen many people leaving the Spelunking area, and also why the goat is so fat, you can only barely feel him dragging his fingers through the layers of fat around you..
Well, time to start searching through the discarded belongings and remains of your predecessors in hope of finding that gold brick! Hopefully you don't end up part of this ride too, but you're going to have to dig through a lot of gunk..
Bit of fanart I received from BronzeBanana the other day, of one of the scenes from my text adventure/interactive, A Day At The Funfair. Bit of a spoiler for that ride too, but at the same time, game's been out for a while. Also that internal shot is so foreboding and the implication of being so buried in there, aaaaah