Can bearded dragon get stuck in caves?

Im designing a structure made of foam grout and sand. I made it! And it looks great other than some... sealing issues which i hope to solve... anyway its a structure intended to be a planter on to as its a bioactive enclosure and its going to have plants. However the cave underneath was originally pretty good in size but i was mostly thinking this as he was a small lil guy at 56 grams.... so question is... can these guys get stuck?? Like can they tell if a space is too small for them? The styrafoam was made from an electronics box as i thought it would be wastefull. I want to know how much of a hassle am i setting myself up for? Or is this another one of those personality things... cuz i know some are smart... but others can be pretty... slow.... worst case scenerio i scrap it but could also make a cool lil hide away for the cleaner craws and other bugs in there...

They're generally pretty good at wiggling through tight spaces, but if the entrance is too small then it could pose a risk of them getting stuck. Probably a good idea to build it as detachable or build in a hinged door/top of some kind so you can access it if need be.