
o00obiffo00o |

But remember, a huge creature doesn't actually take up the whole 15ft space. Just like you and I don't take up our whole 5ft space. If someone created a 5ft diameter hole under me, even with my high dexterity, I'm not sure I'd avoid it. Or even a 2.5ft. hole. It would at least leave me prone, one leg awkwardly having slipped into it.