There was something oddly appealing about approaching the massive yet amazing ass in front of you. Would you probably get crushed under it? Most certainly, but the reward of exploring its confines was just too good to pass up! At least this is what you told yourself as you made the foolish decision to start climbing Ellie's colossal ass cheek instead of waking her up. The smell was less and less pleasant the further up you went until you reach the deep canyon of the ass crack. Ellie's legs were resting atop one another so any exit out the other side was near impossible. The panties were pulled deep into the crack but you still found enough stretch in the fabric to slip inside if need be. You brain is screaming at you to get out of here as fast as you can but you force yourself to stay despite the risk.
You're standing in Ellie's crack, North you can see a tight space between her legs to get to the other side. You could also dive deeper and squeeze inside the panties.