[Question] How to show an embedded region after it has been hidden ?

[ychaouche]

Initial buffer state:
http://i.imgur.com/7lNkpFq.png

C-- on the embedded python tutorial, getting into this state :

http://i.imgur.com/ZUU6CO9.png

Tried C-+ to unfold back the embedded nugget to no avail. Anyone knows if there's any command for this ?